Question

A sphere of mass `m` slides with velocity `v` on as frictionless surface towards a smooth inclined wall as shown in figure. If the collision with the wall is perfectly elastic find a. the impulse imparted by the wall on the sphere `b` the impulse imparted by the floor on the sphere.

Answer 1

As the coefficient is elastic so the sphere will rebound with the same speed after collision.

`J_(1)costheta=J_(2)`…….i
`-mv+J_(1)sintheta=mv`…………..ii
solving eqn i and ii we get
`J_(2)=2mv cot theta`
`J_(1)=2mv cosec theta`