(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A crate of potatoes of mass 13.0 kg is on a ramp with angle of incline 40° to the horizontal. The coefficients of friction are μs = 0.78 and μk = 0.43. Find the frictional force (magnitude) on the crate if the crate is at rest.

2. Relevant equations

F=ma

Ff=μmgcosα

3. The attempt at a solution

Ff=.78*13*9.81*cos40

=76.2 N

Why is my answer wrong?

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# Homework Help: Frictional force

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