NDA 2024 Physics question

Which one of the following statements regarding simple pendulum is correct ? Simple pendulum has a time period independent of amplitude :

(A)only for small amplitudes because then the net force on its bob is independent of its displacement.
(B)for any amplitude because the net force on the bob is always proportional to its displacement.
(C)for any amplitude because the net force on the bob is independent of its displacement.
(D)only for small amplitudes because then the net force on its bob is proportional to its displacement.Correct

Answer: (D)

Solution

The restoring force on the bob is . Only for small angles is , so that the

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-032678