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JEE Main201815 Apr 2018Morning ShiftPhysicsRotational MotionActual

A force of 40 ~N acts on a point B at the end of an L-shaped object, as shown in the figure. The angle that will produce maximum moment of the force about point A is given by:

Options

  1. A= 1 4
  2. B=2
  3. C= 1 2
  4. D=4

Correct answer

C. = 1 2

Step-by-step solution

To produce maximum moment of force line of action of force must be perpendicular to line AB . = 2 4 = 1 2

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