In a laboratory experiment with simple pendulum it was found it took 36 s to complete 20 oscillations when the effective length was kept that 80 cm. Calculate the acceleration due to gravity from these data.

In a laboratory experiment with simple pendulum it was found it took 3

1.	In a laboratory experiment with simple pendulum it was found it took 36 s to complete 20 oscillations when the effective length was kept that 80 cm. Calculate the acceleration due to gravity from these data.
Answer» The time period of a simple pendulum is given by `T=2pisqrt(lg^-1)` or `g=(4pi^2l)/T^2` ………….i In tgeh experiment described in the question the time period is `T=(36s)/20=1.8s` Thus by i `g=(4pi^2xx0.80m)/((1.8s)^2)=98.75ms^-2`

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In a laboratory experiment with simple pendulum it was found it took 36 s to complete 20 oscillations when the effective length was kept that 80 cm. Calculate the acceleration due to gravity from these data.

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