Question

A simple pendulum of length 75cm describe vertical semicircle. What is the velocity of the Bob while passing through the mean positions

Answer 1

$\sqrt{37.5 = }$

Answer 2

Ok since the energy get conserved kinetic energy=potential energy

1/2mv^2=mgh

I.e v=root2gh

Also the height i.e the radius in 75/100m

On subsituting the value v~15m/s