This is a problem from my Physics 101 class that I'm having trouble solving. I'm not sure what equations I'm supposed to use.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal. Find the force necessary to start the crate moving, given that the mass of the crate is m = 34 kg and the coefficient of static friction between the crate and the floor is 0.48.

2. Relevant equations

N= mgcosѲ = 311.386N

W= mgsinѲ = 119.53N

fs,max = mews*N = 149.465N

ΣF = N + fs + W

3. The attempt at a solution

Eek I don't know! That's why I'm posting!

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# Homework Help: Finding Force via Static Friction

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