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A concrete block of mass 25kg is placed on a wooden plank inclined at an angle of 32° to the horizontal.calculate the force parallel to the inclined plane that will keep the block at rest of the coefficient of friction between the block and the plank is 0.45

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25 kg * g * cos(32º) * .45 = ? Newtons

use 9.8 m/s^2 for g

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