Physics-
General
Easy

Question

The velocity of centre of mass of a disc rolling on an inclined plane changes from V to 2V at any instant of time. If M is the mass of disc then increase in its kinetic energy will be-

  1. (9/4) MV2  
  2. MV2/2  
  3. MV2  
  4. 3 MV2  

The correct answer is: (9/4) MV2

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