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6) A 50-kg sofa up a moving ramp at constant speed. The ramp makes an angle of 10 with the horizontal. The coefficient of

6) A 50-kg sofa up a moving ramp at constant speed. The ramp makes an angle of 10 with the horizontal. The coefficient of kinetic friction between the sofa and the ramp is 0.3. Determine the force that must be exerted parallel to the ramp. y My Fre

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