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A block with a mass of 126 kg is pulled with a horizontal fource of F_{applied} across a rough floor. The coefficent of friction between the floor and the block is 0.7. If the block is moving at a constant velocity, what is the magnitude of F_{applied}?

F_{applied} =

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weight - 126 g

friction force = 126 * 9.81 * .7
= F if no acceleration

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i tried that and answer is incorrect....

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