Coefficient of restitution Definition and 64 Threads

  1. I

    Coefficient of restitution in rotation motion

    Homework Statement Suppose A ball of mass m moving with a speed v collides with a rod of mass M and length L placed horizontally on a smooth floor. The coefficient of restitution is 0.5. Homework Equations The Attempt at a Solution In this case how do we utilise the...
  2. I

    Coefficient of restitution in rotational motion

    Suppose A ball of mass m moving with a speed v collides with a rod of mass M and length L placed horizontally on a smooth floor. The coefficient of restitution is 0.5. In this case how do we utilise the information of COR. If it were given COR is 1 then we could conserve kinetic energy...
  3. L

    The coefficient of restitution

    Hello everyone I learned the coefficient of restitution in school. I wonder if the coefficients of restitution of two bodies are different in the cases with and without external force acting on the two bodies. Also, do you guys have any reference paper about COR? Thank you so much!
  4. A

    About 'Coefficient of Restitution'

    Coefficient of Restitution (cor) of colliding bodies describes how elastic or inelastic a collsion is. But, most internet sources (the golf-related sites) and http://en.wikipedia.org/wiki/Coefficient_of_restitution" , describes cor as a property of a particular object. Isn't this wrong? The cor...
  5. W

    Coefficient of Restitution & Collisions

    Hi there, I have been struggling with this problem for a while. It's an A-Level Mechanics problem. A smooth groove in the form of a circle of radius a is carved out of a horizontal table. Two small spheres, A and B, lie at rest in the groove at opposite ends of a diameter. At time t = 0...
  6. R

    Coefficient of restitution help

    [SOLVED] Coefficient of restitution help Homework Statement A light elastic string AB, of natural length 0.5m and modulus of elasticity 12N, has a particle of mass 0.3 kg attached to B. The end A is attached to a fixed point at a distance of 0.7m above a horizontal table. The coefficient of...
  7. D

    Influence of temperature on the coefficient of restitution

    Homework Statement coursework - I will be varying the temperatures of steel ball bearings as they drop onto a metal plate, with the bounce heights, i can work out the coefficient of restitution. however, i need help on the theory behind how temperature will actually effect the coefficient...
  8. E

    Coefficient of restitution definition

    [SOLVED] coefficient of restitution Homework Statement My book defines the coefficient of restitution as \epsilon = \frac{|v_2-v_1|}{|u_2-u_1|} but does not really explain what u_1, u_2, v_1, and v_2 mean. Those terms are all scalars since the coefficient of restitution only "works" in one...
  9. A

    How Does a Coefficient of Restitution of 1/3 Affect Post-Collision Speeds?

    Coefficient of Restitution? PLEASE HELP! Homework Statement Two balls of equal mass moving with the speed of 3 m/s, collide head on. Find the speed of each after impact if the coefficient of restitution is 1/3. Homework Equations e=(v2-v1)/(u1-u2) v2= velocity after impact of object 2 v1=...
  10. D

    Find the coefficient of restitution between the balls (should be easy)

    Homework Statement i'm retaking a test question for half credit and this is the 3rd part to the question. i know the velocities are correct because the teacher gave us the answers. this SHOULD be simple... but okay.. (velocity) V1 = 20ft/s, V2 = 0ft/s. after the collision V1` = 16ft/s...
  11. N

    Coefficient of Restitution for a 2-dimensional physics simulator

    I'm developing a 2-dimensional physics simulator (it includes gravity, electric force, and collisions as of now, between spherical objects of varying masses, charges, and radii). I'm trying to improve my collision algorithm, though, and I'm not sure how to handle coefficients of restitution...
  12. S

    What is the Coefficient of Restitution in a Block Collision with a Wall?

    Hi all, I am trying to find the coefficient of restitution in this example: Block m1=2 kg is pushed with initial velocity v=7 m/s for distance d = 4 meters towards a wall. Kinetic friction b/w floor and block is mK = 0.4. The block rebounds off the wall and travels distance d2 = 1 m before...
  13. S

    How Do You Calculate the Coefficient of Restitution from a Collision Example?

    Hi all, I am trying to find the coefficient of restitution in this example: Block m1=2 kg is pushed with initial velocity v=7 m/s for distance d = 4 meters towards a wall. Kinetic friction b/w floor and block is mK = 0.4. The block rebounds off the wall and travels distance d2 = 1 m before...
  14. B

    Calculating the Coefficient of Restitution: A Quick Guide

    Whats the equation for the coefficient of restitution again? Went blank!
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