|Oct24-08, 11:04 AM||#1|
1. The problem statement, all variables and given/known data
I have this guy trying to lift this cylinder pass the step with minimum force and so is the question, what's the minimum power that he needs to use and at what angle (alpha)?
I also added the solution.
The thing I don't understand is, why when the momentum of the weight and the momentum of the force equal one to another, you can say that the force is minimum? I mean, I can understand that there's no angular acceleration, but why is it minimum (the force)?
2. Relevant equations
3. The attempt at a solution
|Oct24-08, 07:14 PM||#2|
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|Oct25-08, 09:39 AM||#3|
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