Question

Show that the motion of a simple pendulum is simple hormonic and hence derive an equation for its time period ? What is the length of second pendulum ?

Answer 1

Let the mass of the bob is m, and L is the length to which it is suspended from a rigid support. ... Since the restoring force is directly proportional to the negative of the displacement, hence the motion of the simple pendulum is simple harmonic in nature (SHM).