Assertion For an oscillatory motion, the equilibrium position can be represented by saying that it is a point for periodic motion where net external force on the body is zero. Reason For an oscillatory motion, if the body is displaced from the equilibrium position, a restoring force will arise that will try to bring back the body to equilibrium position.

Question

Assertion For an oscillatory motion, the equilibrium position can be represented by saying that it is a point for periodic motion where net external force on the body is zero. Reason For an oscillatory motion, if the body is displaced from the equilibrium position, a restoring force will arise that will try to bring back the body to equilibrium position. (A) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion. (B) Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (C) Assertion is correct but Reason is incorrect. (D) Assertion is incorrect but Reason is correct.

Tardigrade Admin · Accepted Answer

In oscillatory or vibratory motion, an object moves about an equilibrium position due to a restoring force. When the body is at equilibrium position, no net external force acts on it, i.e. F text net =0. Therefore, if it is left there at rest, it remains there forever. If the body is then given then a small displacement from that position, a force comes into play, i.e. restoring force which tries to bring the body back to the equilibrium point giving rise to oscillation or vibrations. Therefore, Assertion and Reason are correct but Reason is not the correct explanation of Assertion.