(adsbygoogle = window.adsbygoogle || []).push({}); 1. If a wooden box was pulled up the inclined plane at a constant speed using a spring scale. How would an equation be derived for uk, us, Ff, and N.

2. Relevant equations

So to get N. The equation would be N=mg-F (sin (theta)).

with F being the reading on the spring scale.

Ff would be the opposite of the pulling force F, from what is read in the spring scale.

So when pulling upward (tan (thetha)) is not used to find uk or us.

So I need help because I dont know wat the equation would be for Uk or Us. And if I am deriving N or Ff the right way.

3. The attempt at a solution

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# Homework Help: Coefficient of Friction of a wooden box

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