- #1

cavery4

- 9

- 0

I have been trying to figure this out for a while. Heh.

So far I drew my picture. One thing I am confused about is what direction friction is in.

I thought that since the box is sliding downward with a force, then the frictional force is up and opposite of that sliding force. I might have this mixed up. I don't know if there is a force pushing it down.

Then I broke it up into X component forces:

Fa - friction (making the downward direction positive) + Wx = ma

Then I became confused about the Fa and wondered if it even belongs.

So then:

-f + wx = ma

-Mu(mg) + mgsin35 = ma (then cancel out the masses)

Mu(g) + gsin35 = a

Mu(g) = a - gsin35

Mu = a - sin35

I have done something wrong. If anyone can help me figure this out, I would really appreciate it. I have tried my best!