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Q)

If length of a simple pendulum is decreasing by 2% find the % decrease in i

If length of a simple pendulum is decreasing by 2% find the % decrease in its period t, where t=2x root over l/g where g is a constant

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A)

T = 2pisq rt [l/g]

dT/T x 100 = 0.5 x (dl/l x 100)

= 0.5 x 2% 1%

∴ If length of pendulum is decreased by 2% then time period will decrease by 1%

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