## A simple pendulum of length 100 cm performs S.H.M. Find the restoring force acting on its bob of mass 50 g when the displacement from the mean position is 3 cm.

As per the given question, we can list out the given quantity Length L = 100 cm = 1m, mass m = 50 g = 50 x $10^{-3}$ kg displacement x = 3 cm = 0.03m , g = 9.8 m/$s^2$ To find = Restoring force, F = ? Solution – Restoring force, F =mg…