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Calculate the time period of a simple pe...

Calculate the time period of a simple pendulum whose length is equal to radius of earth.
Hint `: L =R_(e) = 6.4 xx 10^(6) m , g = 9.8 ms^(-2)`
`T ' = 2pi sqrt(( R_(e))/(2g))`

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`L =R_(e) = 6.4 xx 10^(6) m , g = 9.8 ms^(-2)`
`T . = 2pi sqrt(( R_(e))/(2g))`
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