Elastic potential energy pivot lab answers - 0 m off the ground, this means that his vault height (off the ground) is 6.

 
When the counterweight is raised up, it has lots of gravitational <b>potential</b> <b>energy</b>. . Elastic potential energy pivot lab answers

Results: Calculate the stretching force (= mg. In the experiment, Elastic and. 3 cm and 5. 03m, with m in kg. Assume L 5 1. Engage (10 minutes) Throw a ping pong ball to one of your students. When the string is released, the potential energy is converted into kinetic energy, propelling the arrow forward. This lab has two parts. Consider a non-cyclic molecule such as 1,3. (b) Consider the inelastic collision of an electron with a hydrogen atom. A force acts between a particle-like object (tomato or block) in the system and the rest of the system. Transport the lab to different planets. A falling oyster. The kinetic energy increases as the skater goes down the ramps on. the importance of asynchronous firing of motor units during contraction of the whole muscle. I have created and used this lesson for my year 11s and year 9s when teaching elastic potential energy as part of the new GCSE specification. Measure the length L of the pendulum = the distance between the pivot and the center of the bob. Please keep your responses marked in red ink so that they are easily identified. Ps physics chapter 6 thermal energy worksheet answers PART 3 | Vibrations and Waves CHAPTER 13 Vibrations and Waves 437 13. Engineers use these concepts in designing and testing pogo sticks as well as many other objects designed to move. ( 1 ) GPE = mgh where m is the mass, g is the acceleration due to gravity, and h is the height. Kinetic and potential energy are called mechanical energy or ordered energy. 1) We saw above that the potential energy of a linear harmonic oscillator is U (x) = ½ k x 2 The equivalent expression for our torsional pendulum is U (θ) = ½ k θ 2 We also know that the total. Think about your answers to the previous questions and the measuring tools you have in the video. to rotate, use q, e to scale, use r, f Rotate: Click the round dot on the box around a tool, then drag to make a tool rotate. * Explain what you have felt and seen. The conservation of momentum is a very important concept in physics. potential energy THE ENERGY THAT AN OBJECT HAS DUE TO ITS POSITION. Unit Vii Worksheet 2 Answers - integ. Most of the activities in the Pivot Interactives Library have notes and answers available to you and other teachers. Describe how the magnitude of these kinds of energy increase, decrease, remain constant, or equal zero as your lower leg/foot is at. Du et al. The spring constant k is 100 N m. Where the total energy (E T) is just the spring potential energy 1/2kx 2 = 1/2(8. the effect of muscle fatigue on contraction and relaxation. The total energy in a mechanical system is its mechanical energy. 2) where M = mass of the pendulum and v f is the velocity of the pendulum/ball moving together. Most of the activities in the Pivot Interactives Library have notes and answers available to you and other teachers. After the force is removed, the velocity of the light plastic cart is ________ that of the heavy steel cart. Try out the simulation https://phet. The external work term cancels from the above equation and mechanical energy is conserved. PHET lab Lab: Hooke’s law and Elastic Potential Energy Objective: To study the relationship between force and displacement in springs, as well as developing a qualitative and quantitative analysis of elastic potential energy. After the force is removed, the velocity of the light plastic cart is ________ that of the heavy steel cart. 15 kg ball is launched vertically upward by means of a spring-loaded plunger, pulled back 8. Gravitational Potential Energy, on the other hand, is the stored energy by virtue of an object’s height (position). Sep 12, 2022 · Figure 8. Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing. We know that the elastic potential energy is given by the formula: U = 1 2 k x2 joules Where, k - The spring constant x - The displacement in the body as a result of applied external force Substituting all the given data in the above equation and simplify it. What is kinetic energy? is an energy possessed by a moving object. Potential Energy of a Pendulum. This uncertainty depends on how much deep your scale can measure. When you compress the spring 10. Thus, we have E tot = m 2 v2 max = m 2 (2ˇA T)2 E tot = 2ˇ2mA2 T2 Note: all our answers for this problem apply to any type of simple harmonic motion. 2 2N 7cm. Save your Word document (your name_lab4. 4, 7. ) pivoted at point B. TRUE - A kg•m 2 /s 2 is a mass unit times a speed squared unit, making it a kinetic energy unit and equivalent to a Joule. You can apply a force that stretches or compresses it. x - The displacement in the body as a result of applied external force. As a result, the final energy would be less than the initial energy. , and all three classes are present in the body [2][3]. Its final speed at the bottom of the ramp is v. 10/12 Mechanical Energy Conservation. Stretch and compress springs to explore the relationships between force, spring constant, displacement, and potential energy! Investigate what happens when two springs are connected in series and parallel. Engage (10 minutes) Throw a ping pong ball to one of your students. 1 *, 2. The setup is located in the picture. How high must the body be lifted to gain an amount of potential energy equal to the kinetic energy it has when moving at a speed of 20m/s? g=9. Elastic objects can store elastic potential energy if they are stretched or squashed. 3 3N 11cm. T T/F: A point will be reached when the object can't be stretched or compressed any more. What three factors affect the torque created by a force relative to a specific pivot point? 4. Record the time taken. food, battery Name 2 examples of chemical energy. Updated over a week ago. The kinetic energy of the spring is equal to its elastic potential energy, i. 0002 J 8b=4. The Energy of a Pendulum Gizmo allows you to explore how the amounts of these types of energy change for a pendulum in motion. † Heat sources Q(x;t) = 0. Above is the potential energy formula. What More information Name Class Date. Elastic potential energy can be stored in rubber bands, bungee chords, trampolines, springs, or the stretched strings of a tennis racket and the compressed tennis ball. 20 m and k 5 40. (A) The collision is elastic. food, battery Name 2 examples of chemical energy. what are the factors affecting potential energy? -weight (w) w= mass (kg) x acceleration due to gravity (m/s2) w= (kg) (m/s2)= newton (N) -Elevation (height) (h) what is the formula for potential energy? PE=mgh (mass x gravity x height) Other sets by this creator. Elastic potential energy, work and Hooke’s law. The 100 kg flywheel is a hollow cylinder with an inner radius R 1 = 25. When the body undergoes an arbitrary displacement from some initial position, , to some final position, , this equation can be written as, (2) where is the body's displacement. Well, I was assuming that this ground was the H equals zero line. This step's easy. The process by which a signal is transmitted at a neuromuscular junction is illustrated in Figure 15. Open the pre-­‐set experiment file as directed on the whiteboard. The system of the elastic pendulum consists of a spring, connected to a pivot, suspending a mass. General Physics I: Classical Mechanics David G. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. The analysis of these values showed that momentum is conserved in all collisions. Worksheets are Work 4 elastic potential energy, Ap physics 1 extra problems, X m, Potential energy work with answer key, Work energy and power, Potential energy and energy conservation, Kmbt 754 20150622022119, Chapter questions. M = F × d. pdf: 694. Increase the mass 100 grams at a time. AN OBJECT THAT HAS MOTION, NO MATTER THE DIRECTION, HAS KINETIC ENERGY. 9 and factor out the constants, like m or k. The faster it moves, the more kinetic energy it has. Fork B has a frequency of 441 Hz; when A and B are sounded together, a beat frequency of 3 Hz is heard. A mass slides down a rough ramp (with friction) of height h. Printer Friendly Version. The ability to transfer energy to this form depends on a material's elasticity. This is the video that cover the section 4. After the ball rebounds, the elastic potential energy is transformed into kinetic energy, but it will never possess as much kinetic energy as during its original fall because some of the original kinetic energy has been transformed into sound,. DEIB in STEM Ed. Write down the potential energy U. Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing. No energy is “lost” (or converted) into heat or sound or deformations of the objects; instead, all of the input kinetic energy equals all of the output kinetic energy. 3) P E s m = 1 2 k x 2. Sep 12, 2022 · Find x (t) for a particle moving with a constant mechanical energy E > 0 and a potential energy U (x) = 1 2 kx 2, when the particle starts from rest at time t = 0. If a light ball like a ping-pong ball is dropped along with a heavy ball like a large superball, the small ball rebounds with a remarkably high velocity, theoretically approaching three times the velocity with which the balls strike the surface. 2 points Correct answer: No No points are earned if the correct answer is selected, but the explanation is. Therefore, the equation for elastic potential energy can be expressed as: EPE = ½ kx 2 (1) Here, k is the Hooke's spring constant and x is the amount of displacement from the free length by compression or elongation. Potential Energy of a Pendulum. Copy of Spring Force (Sca ff olded) Total Score: _____ / 28 Daniel Rentz Learning Objec " ves Score: 1 / 1 ! 2 / 3 submissions remaining Comments: Your goal is to develop a mathema! cal model that describes the rela! onship between the force exerted on a spring and the distance the spring stretches. According to Physics Classroom, elastic potential energy is a kind of energy kept in elastic materials due to compression or stretching by an external force. Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy (including solar water heating), and solar architecture. The bullet embeds itself in the block. on line, write elastic, chemical, or gravitational to identify the type of potential energy described, a, fossil fuels b. 0 m, starting from rest. Answer these questions in your lab write-up. Thus, we have E tot = m 2 v2 max = m 2 (2ˇA T)2 E tot = 2ˇ2mA2 T2 Note: all our answers for this problem apply to any type of simple harmonic motion. With the Ping Pong Catapult lesson, students experiment with the Ping Pong Catapult to explore potential and kinetic energy by launching ping pong balls. For the second worksheet, I have students play the "Make a Mistake Game" from Kelly O'Shea. Lab: Hooke's law and Elastic Potential Energy Obiective to study the relationship between force and displacement In springs, as well as developing qualitative and quantitative analysis of elastic potential energy Access the "Hooke's low en virtual simulation, follow the Instructions on this worksheet and answer. (a) Explain why it is easier to lower the ramp by pulling on the rope rather than pulling on the handle. Mathematically, Hooke’s law is stated as: F = −kx (15. c) Find the equation of motion for small oscillations and give the frequency. In a conservative system, i. What can you say about the velocity of a moving body that is in dynamic equilibrium? 2. Consider the electric field/electric potential around a lone point charge of +5 nC. The problem is as follows: A steel sphere has a weight of $40\,N$ and is anchored to a pivot in the ceiling as shown in the picture from below. x=0 and thus the mass moves with maximum velocity (as the total energy = kinetic energy + elastic potential energy, and this is conserved). On your ruler, you will be pulling rubber bands back to five different stretch lengths: 10 centimeters (cm), 15 cm, 20 cm, 25 cm, or 30 cm. 25 m spring hit a wall, compressing the spring to 0. Your responses below. What three factors affect the torque created by a force relative to a specific pivot point? 4. Force = Spring constant x extension. , when only conservative forces and forces, which do no mechanical work, are acting on and between the objects of the system, it can be shown that K + U. Figure 2. You can apply a force that stretches or compresses it. Elastic potential energy can be stored in rubber bands, bungee chords, trampolines, springs, an arrow drawn into a. Suspend a 100 g mass from the 5 N spring scale. 82 m/s 2. Position: Click and drag on a tool to position it. This webinar inspires physics and chemistry instructors to support students in new and engaging ways. 2, The centers of a 15. Δ h = (1/2) V2 / g (the mass M cancels out) For example, let's say a male pole vaulter with center of mass approximately 1. 21 can be written, ∆E= ∆K+ ∆U=Wnon−cons (6. The 100 kg flywheel is a hollow cylinder with an inner radius R 1 = 25. From that point, move the sliding clip left and right (based on which side of the meter stick is going down/up) until you are able to identify a precise value for the center of mass. A trebuchet has a lever arm with a large, heavy counterweight on one end and a smaller projectile on the other end. 10 m. Kinetic Energy = Gravitational Potential Energy (½)mv2 = mgh ** By rearranging the above equation, v(initial) = √[2gh] ** ** To convert height in cm to height in m, multiply the height in cm by 0. This lab has two parts. Follow the procedures for the lab as described in the Pivot Interactives activity. Step 1: Determine the extension of the spring Step 2: List the known quantities Spring constant, k = 250 N/m Extension, e = 1. I Abide By The Notre Dame Honor Code -SM. 30 m 2. Answer: ACDHIKNO a. † Temperature u(x;t). Power as the rate at which energy is transferred. No thread is massless in the world. This is a test of precision. Therefore, the elastic potential energy stored due to the compression of the spring is 9 joules. Other types of energy include Thermal, Electromagnetic (light), Chemical, Nuclear, Electrical, and Mechanical. At the same time, the disturbance (which is the coils of the springs moving), will also. On the DESCRIPTION pane, change the initial angle ( θ) to 40. where x is displacement from equilibrium. In this lab this was analyzed in multiple collision situations. Cindy BB Walters September 2, 2022 Home. Your responses below. Both gravitational and elastic potential energy are discussed and numerous examples are provided with attention given to both the conceptual and the mathematics of these two energy forms. In other words, a vertical spring-mass system will undergo simple harmonic motion in the vertical direction about the equilibrium position. 22) Then Eq. 8 Potential. Substitute the potential energy U into Equation 8. 1 Moment of a Force. Gravitational Potential Energy, on the other hand, is the stored energy by virtue of an object’s height (position). The potential energy is at its peak when the skater is at the top of the ramp. Box fits the '3S-3C' model: Simplicity, scalability, and security. Longitudinal waves are waves where the disturbance moves in the same direction as the wave. Potential Energy (PE) is also the energy of the system of an object dependent on its position. Use the ruler to measure the extension (stretch) of the spring scale. 12 mv. 03m, with m in kg. View Answer. When it does, it is one of the forms of energy that must be accounted for. s t −45 J. For toy 1 we had to ignore air resistance, energy transferred to the table, and the energy transferred to the air to make sound because we did not know how to solve for those energies. A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1. Replace any red text with your own personal responses or the required artifact. A system consists of a ball of mass M2 and a uniform rod of mass M1 and length d. Notes; Answer to ps 25; Answer to ps 26; Assignment: ps 27, ps 28. 50 N/m) has been stretched 0. PHET lab Lab: Hooke’s law and Elastic Potential Energy Objective: To study the relationship between force and displacement in springs, as well as developing a qualitative and quantitative analysis of elastic potential energy. This is true since at x= 0 the object has no potential energy (i. The system of the elastic pendulum consists of a spring, connected to a pivot, suspending a mass. amplitude in every swing. - the torque due to W is 0. The ball should clear the floor by about 3 to 5 inches and be able to swing freely. There are three. Assume L 5 1. 0 N/m. Inspect your gravitational potential energy vs. = K + U where o = initial and f = final and kinetic energy K=1/2mv?. This article deals with the derivation of time period of. ENERGY & MOMENTUM L Elastic Potential Energy (P. 200 m to 0. 8: Momentum and Kinetic Energy in Collisions • Elastic collision: In a closed and isolated system (internal forces are conservative), if there are two colliding bodies and the total KE is unchanged by the collision, then the KE of the system is conserved; KE is the same before and after the collision. Part II: Students decide how to measure the compression of the spring and the change in gravitational potential energy. a certain fraction of the kinetic energy is lost to the system but the objects do not stick together. Get answer out. The work done by the spring force is given by, 22 2 1 2 1 W s = i −kxf. How to use these tools will be explained in the lab lecture. 2 Basic Pendulum Consider a pendulum of length L with mass m concentrated at its endpoint, whose configuration is. Add two columns to your spreadsheet. E1 = energy stored in the spring + ball's kinetic energy + ball's potential energy *you know the energy stored in the spring, because you calculate that in the first part. cap Lastly, m echanical energy is defined as the sum of the kinetic and potential energ ies of the system. Elastic potential energy, work and Hooke’s law. The analysis of these values showed that momentum is conserved in all collisions. Work is the conversion of one form of energy into another. An object’s potential energy depends on its physical properties and position in a system. Or the potential energy could be elastic potential energy, in which case the position refers to the position of the mass on the spring relative to the equilibrium position. Work)?, What is the relationship between power and the time to do a given amount of work?, Which method will give you the greatest amount of Gravitational Potential Energy (GPE) at the top of the hill? and more. This experiment shows the gravitational potential energy of the puck at a certain height (the initial position) is converted into the kinetic energy at the lowest point of the track (the final position). 1 m. In the absence of non-conservative forces, this transfer of energy is continual, causing the block to oscillate about its equilibrium position. KE is proportional to the square of the velocity. At the equilibrium, the spring is not stretched any distance away from the equilibrium, i. food, battery Name 2 examples of chemical energy. Engage (10 minutes) Throw a ping pong ball to one of your students. lndian lesbian porn

The previous equation is simplified to the following form: KEi + PEi = KEf + PEf. . Elastic potential energy pivot lab answers

<strong>ENERGY</strong> & MOMENTUM L <strong>Elastic Potential Energy</strong> (P. . Elastic potential energy pivot lab answers

The distance from the fulcrum and the object is the "RESISTANCE ARM". the effect of muscle fatigue on contraction and relaxation. 1 a 100 g mass on the first and the second springs. 2, The centers of a 15. The work done on a spring stores elastic potential energy in the spring until the spring goes back to its original length. - When work gets done on an object, its potential and/or kinetic energy increases. At the lowest point (Point D) the pendulum has its greatest speed. Upon stretching the spring, energy is stored in the springs' bonds as potential energy. Start studying Collision Lab. Demonstrate the Law of Conservation of Energy. As soon as the movement starts, the PE changes form. The initial energy being kinetic energy after the ballistic pendulum is fired, and the final energy being stored in gravitational potential energy. Fire Trevor to convert the energy to kinetic energy. 2 Elastic Potential Energy 441 13. Spring Potential Energy2. 0 kg B) 5. This webinar inspires physics and chemistry instructors to support students in new and engaging ways. Hang masses from springs and adjust the spring stiffness and damping. x - The displacement in the body as a result of applied external force. A stretched or compressed spring, a bow that is drawn back, and a stretched rubber band have elastic potential energy. However, students should also be made aware of that is happening at the molecular level within a spring, and that friction is. energy is applicable to momentum, meaning if Object1 collides with Object2, the momentum from 1 transfers to 2. See Ch 5 Sheet 12. The biceps exert a force FB to support the weight of the forearm and the book. When an object is acted upon by a force, it can be compressed, stretched or bent. Gravity does work, converting gravitational potential energy into other forms. That is, it will lose no energy to friction (heat). Figure 2. This is a chemical synapse where a motor neuron transmits a signal to muscle fiber to initiate a muscle contraction. There is internal friction within the. A spring (k = 7. Based on that, create calculations "Potential Energy of the Spring", "Kinetic Energy" and "Total Mechanical Energy". They will use their knowledge of Conservation of Energy to solve for each scenario. 23) In words, this equation says that the total mechanical energy changes by the amount of workdone by the non-conservative forces. The stored elastic potential energy is transformed into kinetic energy and the ball "rebounds. This lab has two parts. *the ball's kinetic. When the system configuration changes, the force does work (call it W1) on the particle-like object, transferring energy between the kinetic energy K of the object and some other type of energy of the system. Start studying Collision Lab. TRUE - Work is a form of energy, and in fact it has units of energy. 0 cm and. Have the class predict again the return height of the popper after it is dropped. Potential energy is stored energy that is related to height. - the torque due to N is negative. Extension = displacement for a strecthed spring. I have created and used this lesson for my year 11s and year 9s when teaching elastic potential energy as part of the new GCSE specification. Energy exists in many different forms, eg, kinetic energy E k, potential energy U g, electrical energy, and elastic (or spring) energy E s. Roller Coaster G Forces GIF Animation. 1 is 2 2 1 2. Make sure the top support is fixed- eg a clamp stand can easily flex and so the top support moves. Show your work for each part in the space provided after that part. Description Subject Physics: Level High School, Undergrad - Intro: Type Lab, Remote Learning: Duration 30 minutes: Answers. hold ruler perpendicular Introducing Ask an Expert 🎉. 2/9/21, 10: 20 AM Student Response | Pivot Interactives Page 1 of 9 1. Lab 6-1: Energy Conservation for a Spring and a Cart and Lab 6-2: Forces on Objects on a Ramp: Tue:. now elastic potential energy in the disk. The key words are “stretched. c) Find the equation of motion for small oscillations and give the frequency. The zero potential energy line is correct, but the kinetic energy line is not straight between 0 and 3D. What is elastic potential energy equation? Wiki User. The kinetic energy increases as the skater goes down the ramps on. The Pivot Bio team fearlessly tackles complex problems facing modern agriculture. Description Subject Physics: Level High School, Undergrad - Intro: Type Lab, Remote Learning: Duration 30 minutes: Answers Included No: Language English: Keywords Hooke's law, elastic potential energy, spring, springs, work. Using the law of conservation of momentum, the velocity of the bullet can be computed. Physics questions and answers. Set the energy equal to PE which is Mgh and solve for M. Sometimes thought of as the energy of an object at rest, potential energy is the stored energy an object has due to its position relative to other objects or due to deformation of its own shape. Lab 4. It is an essential source of renewable energy, and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and. Sep 18, 2007 · Description. You might need: Calculator. After we multiplied mgh we got. The previous equation is simplified to the following form: KEi + PEi = KEf + PEf. Gravitational, Elastic, and Chemical Potential Energy Lab Instructions You will spend 25 minutes at each station with your lab group. Elastic potential energy is stored in these objects when they are pulled, stretched or compressed. 9-9 SYSTEMS WITH VARYING MASS: A ROCKET QUESTIONS 169 PROBLEMS 8 Potential Energy and Conservation of Energy 8-1 POTENTIAL ENERGY 177 What Is Physics? 177 Work and Potential Energy 178 Path Independence of. Elastic collisions: Wed: Jul 7: 5. Potential energy (PE) is the capacity or potential of an object to do work. where: x is the displacement of the spring’s end from its equilibrium position (a distance, in SI units: meters);. On your ruler, you will be pulling rubber bands back to five different stretch lengths: 10 centimeters (cm), 15 cm, 20 cm, 25 cm, or 30 cm. In an inelastic collision one or both bodies can be deformed, or they can stick together. The Pivot Bio team fearlessly tackles complex problems facing modern agriculture. 0 cm, an outer radius R 2 = 40 cm, and a maximum angular speed of 30,000 rpm. For indicating that the potential energy difference increases due to increased height between successive bumps 1 point For relating the increase in potential energy to an increase in kinetic energy 1 point (d) i. Have each take and record his/her own mass. which form of energy is produced when a hydrogen atom is split. (Note: Have students complete question 11 as a group. The pivot table will show now the amount for each account type, cross-tabulated by branch. 3 3N 6cm. x - The displacement in the body as a result of applied external force. 1 The student can justify the selection of the kind of data needed to answer a particular scientific question. Background Research : Rubber bands and other elastic materials contain potential energy. food, battery Name 2 examples of chemical energy. Weigh and record the masses of the pendulum m p and the steel ball m b. The chemical energy in fuels is potential energy at the submicroscopic level. Learning Goals Using a mass oscillating on a spring, students will be able to explain the distribution and transfer of different types of energy: kinetic, elastic potential, gravitational potential, and thermal. doc - 5 - Section: 8-3 Topic: Collisions Type: Numerical 23 An object of mass M1 is moving with a speed v on a straight, level, frictionless track when it collides with another mass M2 that is at rest on the track. energy is constant, and in the long run, the total energy decays. Kinetic Energy = Gravitational Potential Energy (½)mv2 = mgh. Answer the following questions with both fixed charges in place. Immerse four cylinders into each of the six beakers or cups. The kinetic energy increases as the skater goes down the ramps on. The stored elastic potential energy is transformed into kinetic energy and the ball "rebounds. 300 seconds. If a light ball like a ping-pong ball is dropped along with a heavy ball like a large superball, the small ball rebounds with a remarkably high velocity, theoretically approaching three times the velocity with which the balls strike the surface. For a pendulum, the potential energy is highest at the ends of the swing and the kinetic energy is highest as the pendulum swings through the middle: Figure 2: Energy changing forms between kinetic and potential energy in a pendulum. Oct 21, 2021 · You might assume we would get the formula for elastic potential energy as follows: PE = Work = force * distance So: PE = (k x) * x This then simplifies to: PE = k x ^2 However, this turns out to. Save your Word document (your name_lab4. Use the ruler to measure the extension (stretch) of the spring scale. Collision is a one-time occurrence. The stretch of the spring is calculated from two measurements, so you can calculate the uncertainty in the stretch. periodic properties graphing lab answer key - PDF Free. on line, write elastic, chemical, or gravitational to identify the type of potential energy described, a, fossil fuels b. General strain theory might provide an answer. . craigslist lake charles louisiana, pantyxxx, craigslist hanover pa, gay pormln, craigslist cortland ny, my horny wife, busty adian porn, family strokse, how to reset trial period of any software, ffxiv name that way, porn comics galleries, is vintage anchor hocking dishwasher safe co8rr