Question

iii Explain why in SHM the acceleration is zero when the velocity is greatest
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Answer 1

Answer:

When the mass is at the maximum displacement position, velocity is zero because the mass is changing direction. When the mass reaches the equilibrium position, there is no restoring force. The acceleration, therefore, is zero, but the mass is moving at its highest velocity.

Answer 2

When the mass is at the maximum displacement position, velocity is zero because the mass is changing direction. ... When the mass reaches the equilibrium position, there is no restoring force. The acceleration, therefore, is zero, but the mass is moving at its highest velocity.