Question

a 65 kg object is pulled at a constant velocity up an incline w/ a force of 95 N parallel to the incline. Assuming that the difference between the work output and input is work required to overcome friction, what is the force of friction along the incline (the length of the incline is 5 m, the height is 1.92 m and the efficiency of this machine is 68.2%).
114

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