Questions
A body of mass 2.0 kg is placed on a smooth horizontal surface. Two forces = 20 N and N are acting on the body in directions making angles of 30° and 60° to the surface. The reaction of the surface on the body will be
detailed solution
Correct option is D
Let us find vertical force: F1 sin 300 + F2 sin 600 = 20 ×12+103(32) = 25 NThis is greater than mg. So contact of body with surface will be lost and reaction will be zero.Talk to our academic expert!
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ln the figure shown 'P' is a plate on which a wedge B is placed and on B a block A of mass m is placed. The plate is suddenly removed and system of B and A is allowed to fall under gravity. Neglecting any force due to air on A and B, the normal force on A due to B is
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