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Old Sep 28th 2009, 11:18 PM   #1
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Semi-Atwood Machine

I've uploaded a diagram of the problem.

In the setup shown, m1 = 0.30kg, m2 = 0.45kg and theta = 11 degrees. Also, between the first block and the incline, coefficient of friction = 0.40. Assume the system moves so that the first block slides up the incline. (a) What is the acceleration of the system? (b) What is the tension in the string?

I really have no idea how to start this. First, I suppose draw FBD for both m1 and m2. Then what should I do? I'll draw them and post them to see if I'm on the right track..
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Old Sep 28th 2009, 11:42 PM   #2
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Here are my FBDs. I'm not really sure where to go from here though.
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Old Sep 28th 2009, 11:49 PM   #3
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answer

that coefficient of friction, it is static friction or kinetic friction ?
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Old Sep 28th 2009, 11:53 PM   #4
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Originally Posted by joephos View Post
that coefficient of friction, it is static friction or kinetic friction ?
Good question; it doesn't say...
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