If effective length of a simple pendulum is equal to radius of earth (R), time period will be
A
T=π√Rg
B
T=2π√2Rg
C
T=2π√Rg
D
T=2π√R2g
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Solution
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formula,
T=2π√LRg(R+L)
If the effective length of a simple pendulum is equal to the radius of the earth (R),
then,
T=2π√R×Rg(R+R)
=2π√R2g(2R)
∴T=2π√R2g
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