Question

What effect will doubling the mass of the bob have on the time period of a simple pendulum?

• A. Halved.
• B. Doubled.
• C. Becomes $8$ times.
• D. No effect.

Answer 1

Answer: (D)

Time period of a simple pendulum, $T=2\pi \sqrt{\frac{L}{g}}$
It means $T$ is independent of mass of the bob $m$ . Hence, if mass is doubled, $T$ will not change.