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Question

A uniform solid sphere of mass m and radius R is suspended in vertical plane from a point on its periphery.The time period of its oscillation is:

A
2πRg
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B
2π3R2g
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C
2π7R5g
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D
2π2R5g
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Solution

The correct option is B 2π3R2g
T=2πImgL
where I=mR2+mR22=3mR22
T=2π3mR22mgR=2π3R2g

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