please solve
Q. No work is done when :
(A) a nail is plugged into a wooden board
(B) a box is pushed along a horizontal floor
(C) there is no component of force parallel to the direction of force
(D) there is no component of force normal to the direction of force
Dear Student
we know that the work done=F.S that is FScostheta where F is the force applied and s is the displacement.
In both cases 1 and 2 there is both F and S but if there is no force parallel to the displacement the work done will be zero. As if there will be no force along displacement F will be zero and work done will be zero.So option C is correct.
we know that the work done=F.S that is FScostheta where F is the force applied and s is the displacement.
In both cases 1 and 2 there is both F and S but if there is no force parallel to the displacement the work done will be zero. As if there will be no force along displacement F will be zero and work done will be zero.So option C is correct.
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