As shown in the figure below, a box of mass m = 58.0 kg (initially at rest) is pushed a distance d = 57.0 m across a rough warehouse floor by an applied force of FA = 248 N directed at an angle of 30.0° below the horizontal. The coefficient of kinetic friction between the floor and the box is μk = 0.121. Determine the following. (For parts (a) through (f), give your answer to the nearest multiple of 10.) (a) Calculate the value of the normal force. FN = N (b) Calculate the magnitude friction force. Ff = N (c) Calculate work done by the fo

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.