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I'm having trouble writing a force diagram. I know the formulas to use but I don't know which direction the forces are in. Any help would be appreciated.

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- Thread starter devnull
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- #1

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I'm having trouble writing a force diagram. I know the formulas to use but I don't know which direction the forces are in. Any help would be appreciated.

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Doc Al

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Give it a shot. Take each cube and write down all the forces acting on it. (Don't forget Newton's 3rd law.)Originally posted by devnull

I'm having trouble writing a force diagram. I know the formulas to use but I don't know which direction the forces are in.

Hint: Besides the applied force P, I see three "kinds" of forces: weight, friction, and normal forces.

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