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Question

A thin hollow sphere of mass m is completely filled with an ideal liquid of mass m. When the sphere rolls with a velocity v kinetic energy of the system is equal to

  1. fraction numerator 1 over denominator 2 end fractionmv2    
  2. mv2    
  3. fraction numerator 4 over denominator 3 end fractionmv2    
  4. fraction numerator 4 over denominator 5 end fractionmv2    

The correct answer is: fraction numerator 4 over denominator 3 end fractionmv2

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