"For a 7.5 kg object on a horizontal surface that has a coefficient of static friction where us = 1.0, and a coefficient of kinetic friction where uk = 0.8, the maximum parallel force which will not set the object in motion is?"(adsbygoogle = window.adsbygoogle || []).push({});

a) 23.5 N

b) 51.2 N

c) 60.0 N

d) 73.5 N

e) 81.3 N

This is the first problem I've ever done with the coefficient of static and kinetic friction. I have these formulas; F fr = ukFN; Fmax = usFN

Im not sure if thats all I need. I do know that the Normal force (FN) is 71.8, but Im not sure how to go about finding the "max parallel force". If I solve for "Fmax" I get 71.8, but that leaves out the coefficient of static friction. I think I need help

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# Homework Help: Maximum Parallel Force of an Object

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