The equation of motion of a simple harmonic oscillator is

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

18. The equation of motion of a simple harmonic oscillator is

d^{2} x / d t^{2}=-9 x

, where

x

is displacement and

t

is time. The period of oscillation is (A)

6 \pi

(B)

9 / 2 \pi

(C)

3 / 2 \pi

(D)

2 \pi / 3

(E)

2 \pi / 9