On a planet, a body dropped from a height of 8 m, reaches the ground in 2 seconds. If the length of a simple pendulum on that planet is 1 m, the period of oscillation is:
A
13s
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B
π2s
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C
πs
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D
12s
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Solution
The correct option is Cπs S=Ut+1/2at2 U=0 ∴8=1/2a×(2)2 a=4 T=2π√ea =2π√14 =πsec