A simple pendalum is suspended from a peg on a verticle wall . The pendulum is
Channel: Doubtnut
Date: 2020-07-12

A simple pendalum is suspended from a peg on a verticle wall . The pendulum is pulled away from the well is a horizental position (see fig) and released . The bell his the well the coefficient of resitution being `(2)/(sqrt(5)` \what is the miximum number of colision after which the amplitube of secillections between less that `60` digree ?