When an object is moving in a simple harmonic motion, which of the following is at a minimum when the displacement from equilibrium is zero?

A. the magnitude of the velocity
B. the magnitude of the acceleration
C. the kinetic energy
D. the total mechanical energy
E. More than one of the above answers.

1 answer

if x = a sin wt
v = aw cos wt
a = -w^2 x

when x = 0
|v| is MAX so Ke is MAX

total energy is CONSTANT

So only acceleration which is proportional to x