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NEST2016PhysicsLaws of Motion

A uniform block of mass m resting on a rough horizontal plane just starts moving when pulled by a string with a force of magnitude m g making an angle of 45^ with the horizontal. Then the block will move if it is

Options

  1. Apulled by a horizontal force of magnitude m g .
  2. Bpulled by a force of magnitude mg making an angle of 30^ with the horizontal.
  3. Cpushed by a force of magnitude mg making an angle of 45^ with the horizontal.
  4. Dpulled by a force of magnitude m g making an angle 60^ with the horizontal.

Correct answer

D. pulled by a force of magnitude m g making an angle 60^ with the horizontal.

Step-by-step solution

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