First slide
Mechanical equilibrium force cases
Question

A block of mass 3 kg is at rest on a rough inclined plane as shown in the figure. The magnitude of net force exerted by the surface on the block will be

Easy
Solution

Net force applied by block on the inclined plane is equal to the weight of the body. As the body is in static equilibrium the net reaction force exerted by the inclined plane is also equal to the weight of the body.

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