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Questions  

A spring balance has a scale that reads 0 to 20 kg. The length of the scale is 10 cm. A body suspended from this balance, when displaced and released, oscillates with period of \large \frac{\pi }{{10}}\sec. What is the mass of the body

a
4.9 kg
b
9.8 kg
c
19.6 kg
d
14.7 kg

detailed solution

Correct option is A

m = 4.9 Kg

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