Suppose the amplitude of a simple pendulum having a bob of mass m is θ 0 . Find the tension in the string when the bob is at its extreme position.

Question

Philoid · Accepted Answer

When a simple pendulum reaches the extreme position it stops at that point. That means

So, the centrifugal force will become,

So, the only force that is going to contribute to tension will be the component of gravity opposite to the direction of tension.

So, tension will be,