A body of mass 5kg hangs from a spring and oscillates with a time period of 2π seconds. If the body is removed, the length of the spring will decrease by?

A body of mass 5kg hangs from a spring and oscillates with a time period of 2π seconds. If the body is removed, the length of the spring will decrease by? Correct Answer g meters

Here T=2π√(m/k)=2π or m/k=1 In equilibrium, mg=kd d=mg/k=1×g=g meters.
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