Which object moves in simple harmonic motion?/

a stretched rubber band with an mass

b rolling ball going down a hill

c moving car

d orbiting satellite

Answer:Stretched rubber band with an mass

Explanation:

Simple harmonic motion requires a restoring force.

Simple harmonic motion should be periodic.

Option A:

When a rubber band is stretched, the internal forces of the rubber band pulls the band inside. So, internal forces are the restoring forces in a rubber band.

The motion is periodic as well since the the rubber band makes to an fro motion expanding ans contracting.

So, this performs SHM.

Option B:

There is no restoring force and no periodicity.

So, this is not SHM.

Option C:

There is no restoring force and no periodicity.

So, this is not SHM.

Option D:

There is periodicity but no restoring force.

So, this is not SHM.