Find the normal reactions?
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According to Newton's third law, action and reaction are equal and opposite, hence the weight component exerted on the surface is equal to the normal reaction exerted by the surface. Hence, Ninc=√3W2 where Ninc signify normal reaction by the incline plane.
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A force acting perpendicular to two surfaces in contact with each other. ... If weight is the only vertical force acting on an object lying or moving on a horizontal surface, the normal reaction force is equal in magnitude, but opposite in direction to the weight.
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