- #1
MartinLoland
- 7
- 0
Homework Statement
I am trying to understand how forces transfer from a wheel / pulley onto a beam, and then calculating the resulting moment. The image describe the problem.
The rope is in tension with force "S", the wheel/pulley can rotate freely without any friction.
Homework Equations
[/B]
M = force*distance
The Attempt at a Solution
Method 1: If we look at the global system it should be ok to use the force*distance to find the resulting moment M.
Method 2: If we first calculate the forces acting between the pulley and the beam and then isolate the beam we should be able to find the moment.
I thought method two would be right because the pulley don't transfer moment, but then again we should also be able to look at it as a global system. Which one is correct and why doesn't the other one work? Thanks :)