# Revise Mechanics! (2)

Classical Mechanics Level 3

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 $$\dfrac{2}{\sqrt5}$$.

What is the minimum number of collisions after which the amplitude of oscillations becomes less than 60 degrees?

×

Problem Loading...

Note Loading...

Set Loading...