What is the formula for coefficient of restitution?
v 2−v 1=−e(u 2−u 1). This formula is Newton’s law of restitution. The coefficient of restitution always satisfies 0≤e≤1. When e=0, the balls remain in contact after the collision.
What happens when two spheres collide?
A moving sphere collides elastically with a sphere at rest. You can change the masses of the spheres and the impact parameter to study their influence on the paths of the spheres after the collision.
What is the value of coefficient of restitution for an elastic collision?
e = 1
In a perfectly elastic collision, we said that the relative velocities before and after a collision have the same magnitude and the opposite sign. This means that the coefficient of restitution for a perfectly elastic collision is e = 1. Inelastic collisions will have a coefficient of restitution between 0 and 1.
What is coefficient of restitution Class 11?
The coefficient of restitution is defined as the ratio of the final velocity to the initial velocity between two objects after the collision. The coefficient of restitution is essentially a measure of the restitution of a collision between two objects that is how much of the energy remains after the two bodies collide.
Is the coefficient of restitution a perfectly elastic collision?
The equation above is the restitution equation, and the coefficient of restitution is 1, which is a perfectly elastic collision.
What is the coefficient of Restitution ( COR )?
The coefficient of restitution (COR), also denoted by (e), is the ratio of the final to initial relative velocity between two objects after they collide. It normally ranges from 0 to 1 where 1 would be a perfectly elastic collision.
How is the coefficient of restitution related to speed?
The coefficient of restitution is also sometimes denoted as . Note that the ordering of speeds in the numerator is opposite the ordering in the denominator. This reflects the fact that after the collisions, the direction of relative speed changes, because of a bouncing back effect.
What are the main principles of the restitution equation?
In a one-dimensional collision, the two key principles are: conservation of energy (conservation of kinetic energy if the collision is perfectly elastic) and conservation of (linear) momentum. A third equation can be derived from these two, which is the restitution equation as stated above.
