Question

In the figure shown a particle P strikes the inclined smooth plane horizontally and rebounds vertically if the angle `theta` is `60^(@)` then the coefficient of restitution is:

A. `1//3`
B. `1//sqrt(2)`
C. `1//2`
D. `1`

Answer 1

Correct Answer - A
`tan30^(@)=(eVsin 60^(@))/tan60^(@)`
`e=tan30^(@)/tan60^(@)= tan^(2)30^(@)`