Question

Simple Harmonic Motion

The velocity is maximum when the position is ______?

The acceleration is maximum when the position is _______?

The net force is maximum when the position is _________?

True/ False : The gravitational force on the mass is zero at themaximum in position.

True/False: the gravitational force on the mass is zero at theequilibrium position.

True/False: the force exerted by teh spring is zero at theequilibrium position.

True/Fase: teh net force on the mass is zero at the equilibriumposition.

True/False: the average velocity is zero

Answer 1

A) The velocity is maximum when the position is mean position ( at this posion Kinetic Energy is maximum and Potential Energy is zero)

B) The acceleration is maximum when the position is itself a amplitude i.e. x=A. Because acceleration is propotional to displacement. since the amplitude is the maximum displacement, acceleration is maximum at x=A.

C) F=ma, F is proportional to a (acceleration) and a is maximum at x=A so, F will be maximum at x=A.

d) False, only gravitational force acts as a restoring force at maximum in position.

e) True, (from part A)

f) True, F=-Kx so at x=0, F=0

g) True,

h) true, for a complete cycle it is zero