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A 74 kg box rests on a level surface. The coefficient of static friction, µS = 1.1 and the coefficient of kinetic friction, µK = 0.7 . What is the magnitude of Friction on the box from the surface?

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Wb = m * g = 74kg * 9.8N/kg = 725.2 N. =
Weight of box.

Fs = u * Wb = 1.1 * 725.2 = 797.7 N. =
Force of static friction.

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