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JIPMER2018PhysicsLaws of Motion

A box of mass 8 kg is placed on a rough inclined plane of inclination 30^ . Its downward motion can be prevented by applying a horizontal force F , then value of F for which friction between the block and the incline surface is minimum, is

Options

  1. A80 3
  2. B40 3
  3. C40 3
  4. D80 3

Correct answer

A. 80 3

Step-by-step solution

For friction to be minimum, aligned F & = mg F & = mg & = 80 3 aligned

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