Simple Harmonic Motion - Multiple Choice Questions

Q5.A body moves with simple harmonic motion of amplitude A and frequency b/2 .

What is the magnitude of the acceleration when the body is at maximum displacement?

A zero
B 42Ab2
C Ab2
D 42Ab-2

At maximum displacement x = A.

acceleration = -(2f)2x

= -42b2A/42

= -b2A

as we are asked for the magnitude only the minus sign can be ignored.