Recent content by Dor_M

I totally see your point, I understand what you are saying. specially in the case that this was an exam in analytic mechanics. What I do not understand is why it is wrong. Let's say that you faced a problem outside of an exam, and you carefully solved the problem by mixing conclusions from two...

I know. The thing that made me do that is that I asked the professor something during the exam and he told to me to reduce the degrees of freedom as much as I can. So I did. I know it was not what was expected, but still, it does not looks like I did something wrong. I mean, that seem like a...

I still don't understand. Which rule did I break? In the case of the constrain (Xcm(M1+m2) - X1M1-x2m2) = 0. I can't see which law it is breaking. why can't I assume momentum conservation?

< Mentor Note -- thread moved to HH from the technical physics forums, so no HH Template is shown >[/color] My question is from an exam in analytic mechanics. The question was about an object sliding on inclined plane, the plane's angle is constant, and the plane is free to move along X axis...