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A hollow spere of mass M and radius R is...

A hollow spere of mass M and radius R is rotating with angular frequency `omega` it suddenly stops rotating and 75% of kinetic energy is converted to heat if s is the speicific heat of the material in j / kg k then rise in temperature of the spere is (MI of hollow sphere `=2/3MR^(2)`

A

`(Romega)/(4S)`

B

`(R^(2) omega^(2))/(4S)`

C

`(R omega)/(2S)`

D

`(R^(2)omega^(2))/(2S)`

Text Solution

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The correct Answer is:
B
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