A ball collides with a smooth and fixed inclined plane of inclination θ after falling vertically through a distance h. If it moves horizontally just after the impact, the coefficient of restitution is :
Text Solution
Verified by ExpertsThe correct answer is:
A
e = 
apply conservation of momentum
m 
sin θ = m vcos θ ......(i)
e 
cos θ × m = mv cos θ ......(ii)
= cot θ ∴ e = tan 2 θ on solving
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