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

What is the minimum work needed to push a 1770 kg car 346 m up a 16.2 deg incline?

Without friction, I got the the answer of 1670000 J.

What is the minimum work needed if the coefficient of friction is 0.25?

2. Relevant equations

3. The attempt at a solution

Ff=µFN

FN = 17346 cos 16.2

FN = 16657 N

Ff = .25 * 16657 = 4164.25 N

then, sin16.2 * 17346 = 4839 N

add them? subtract? or is it all completely wrong?

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# Homework Help: Finding Minimum Work?

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