The mass of a box is 28 kg. Find the pressure exerted by the box on ground, if it is made to rest with its side of dimensions as 140cm x 50 cm. (given g= 10 m/s2
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Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.

What causes the formation of ocean currents?