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

A 6 kg object sits on a horizontal surface with coefficient of friction = .8. What is the minimum force (not necessarily horizontal) necessary to make the object slide?

2. Relevant equations

F_{smax}= u * F_{n}

where F_{smax}is the force that must be overcome to make an object move, u is the coefficient of friction, and F_{n}is the normal force.

3. The attempt at a solution

I was just wondering if this seemed correct:

F_{g}= -58.8 N (mass * g) so

F_{n}= 58.8 N

I'm not clear on when exactly one can make the assumption that F_{g}= F_{n}

but then using that value of F_{n}I calculated F_{smax}, so the minimum force necessary to make the block move is any force greater than F_{smax}.

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# Homework Help: Minimum Force to Make an Object Move

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