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A simple pendulum is suspended from a pe...

A simple pendulum is suspended from a peg on a vertical wall. The pendulum is pulled away from the wall to a horizontal position (see figure) and released. The ball hits the wall, the coefficient of restitution being `2/(sqrt5)`. What is the minimum number of collisions after which the amplitude of oscillations becomes less than 60 degrees ?

A

6

B

3

C

5

D

4

Text Solution

Verified by Experts

The correct Answer is:
D
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