Question

What is work done by the force of tension$\left(T\right)$ in the string of a simple pendulum?

• A. $\frac{TL}{4}$
• B. $\frac{TL}{2}$
• C. $TL$
• D. Zero

Answer 1

The correct option is D Zero

Let $T$ be the tension in the string and tension is always a pulling force



Work done is always zero, as displacement of bob of simple pendulum is always perpendicular to the string or the direction of tension of the pendulum.

Hence option D is the correct answer