Question

A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m s^-2 at a distance of 5 m from the mean position. The time period of oscillation is

(a) 2π s 

(b) πs 

(c) 2 s 

(d) 1 s

Answer 1

Correct option  (b) πs 

Explanation:

Magnitude of acceleration of a particle moving in a SHM is, |a|= ω²y; where y is amplitude.