- #1
Bradracer18
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Homework Statement
A lightweight rope is wrapped around a 100lb drum, passes over a frictionless pulley, and is attached to weight, W. The coefficient of friction is 0.50. Determine the maximum amount of weight that can be supported by this arrangement.
I've drawn a picture, showing what I think are the forces on everything.
I need help solving this, as I'm not sure how to actually do it. The answer, I have(given to me) is W=75lbs.
Homework Equations
The Attempt at a Solution
Forces in x direction = 0 = Fa - Nb + Tw
Forces in y direction = 0 = Na + Fb - 100
Not sure if there is a moment(and if so, where do I take it about)...also, if not...I'm not sure how to solve this next.
Thank you,
Brad
View attachment friction.bmp