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Fireant
#1
Feb27-12, 09:12 AM
P: 22
There's a box sitting on a plank. The coefficient of static friction is 0.33. I want to figure out at which angle the box will begin to slide if the plank is tilted.


I know the factors that come into play are FN, Fg or Fgx, and Fs.



So far I have

Fnet= FN-Fs-Fg
=FN- μs-sin∅
=cos∅-0.33-sin∅

This doesn't look right... can anyone help me out?
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