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A thin hollow sphere of mass m is comple...

A thin hollow sphere of mass `m` is completely filled with non viscous liquid of mass `m`. When the sphere roll-on horizontal ground such that centre moves with velocity `v`, kinetic energy of the system is equal to

Text Solution

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Total enregy `=KE`+rotational `KE`
`=1/2(2m)v^(2)+1/2(2/3mr^(2))omega^(2)`
`=1/2(2m)v^(2)+1/3mv^(2)=4/3mv^(2)`
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