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Find the radius of gyration of a hollow ...

Find the radius of gyration of a hollow uniform sphere of radius `R` about its tangent.

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Moment of inertia of hollow sphere about its tangent `I=2/3MR^(2)=5/3MR^(2)`
Let radius of gyration of `K`. Hence
`MK^(2)=5/3MR^(2)implies sqrt(5/3)R`
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