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NEET2015PhysicsLaws of MotionActual

A block of mass 2 kg is pushed against a rough vertical wall with a force of 40 N , coefficient of static friction being 0.5. Another horizontal force of 15 N , is applied on the block in a direction parallel to the wall. If the block will move, then its direction would be

Options

  1. A15^ with 15 N force
  2. B53^ with 15 N force
  3. C45^ with 15 N force
  4. D75^ with 15 N force

Correct answer

B. 53^ with 15 N force

Step-by-step solution

The net force = 20^2+15^2 -0.5 40 aligned & =25-20=5 ~N & = 20 15 = 4 3 & = ⁻¹ ( 4 3 )=53^ & aligned So, the block will move at an angle 53^ with the 15 N force.

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