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MHT CET202014 Oct 2020Evening ShiftPhysicsMotion in Two DimensionsActual

A particle moves along a circular path with decreasing speed. Hence

Options

  1. Aits resultant acceleration is towards the centre.
  2. Bits angular momentum remains constant.
  3. Cthe direction of angular momentum remains constant.
  4. Dit moves in a spiral path with decreasing radius.

Correct answer

C. the direction of angular momentum remains constant.

Step-by-step solution

A particle moves along a circular path with speed, then the angular momentum is given by L = r p = r m v When the speed v decrease, the magnitude of of angular momentum decreases. But the direction of angular momentum remains constant.

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