(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

here:

http://img144.imageshack.us/img144/7518/26700576ok1.gif [Broken]

2. Relevant equations

3. The attempt at a solution

well, I tried to solve the motion equation from the inside table. I think there should be a d'elambertian force to the left, and friction force to the right, so:

Fd - miu*N = m1*a . Now, Im not sure about the Normal force- need it be N=m1+m2, or just m1 (I think it's the first option).

Then my main problem - about the d'elambertian force: Is the Fd equal to the external frame's F, or are the accelerations equal, and the forces need to be calculated via the acceleration and masses?

And finally: when I try to calculate on the external frame (the cart): need the motion equation be equaled to just Ma, or all the masses, ie (m1+m2+M)a ?

Thanks in advance..

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# Homework Help: Dynamics - frames of reference

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