Homework Help: Physics - Inclined Motions

Posted by Shaila on Wednesday, August 11, 2010 at 7:08am.

You are pushing a 53kg crate at a constant velocity up a ramp onto a truck. The ramp makes an angle of 22deg with the horizontal. If your applied force is 373N, what is then coefficient of friction between the crate and the ramp?

Physics - Inclined Motions - Damon, Wednesday, August 11, 2010 at 10:44am
normal force = 53 * 9.8 * cos22
friction force down ramp = mu * 53 * 9.8 * cos 22
component of weight down ramp = 53 * 9.8 * sin 22
so
373 = mu * 53 * 9.8 * cos 22 + 53 * 9.8 * sin 22

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