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KVPY2017PhysicsRotational Motion

A solid cube of wood of side 2 a and mass M is resting on a horizontal surface as shown in the figure. The cube is free to rotate about a fixed axis AB . A bullet of mass m (

Options

  1. AMv / ma
  2. BMv / 2 ma
  3. Cmv / Ma
  4. Dmv / 2 Ma

Correct answer

D. mv / 2 Ma

Step-by-step solution

mvr = I = mv ( 4 a 3 ) 8 3 Ma ² = mv 2 Ma

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