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The normal force exerted by the surface of the wedge is normal to the surface of the ________

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The normal force exerted by the surface of the wedge is normal to the surface of the ________

(a) Base of the wedge

(b) Base of the body residing over it

(c) Base of the body just neighbour to the wedge

(d) Earth’s surface

This question was addressed to me in exam.

I want to ask this question from Wedges topic in section Friction of Engineering Mechanics

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The correct option is (b) Base of the body residing over it

For explanation I would say: As we know the normal forces act perpendicular to the surfaces of the body kept over the wedges. Thus the normal force exerted by the surface of the wedge is normal to the surface of the base of the body kept over the wedge. The wedges are very useful in the industries, and it has a wide application.

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