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A pendulum is executing simple harmoinic motion with a time period T if the length of pendulum is decreased to 36% the percentage chage in the time period of the pendulum is A pendulum is executing simple harmoinic motion with a time period T if the length of pendulum is decreased to 36% the percentage chage in the time period of the pendulum is
By formula \ now length is decreased by 21% therefore new length = L – 36L/100 = 64 L/100 put in eq we getT2 = 236L/100 = T1 * 6/10 T1 - T2 = 0.4 T1so percentage change = = 0.4*100 = 40%
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