- #1
snoggerT
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Homework Statement
(a) If R = 12 cm, M = 500 g, and m = 50 g (below), find the speed of the block after it has descended 50 cm starting from rest. Solve the problem using energy conservation principles.
- The pulley is setup on the corner of a desk with the object hanging from it. M is the Pulley, m is the object, R is the radius of the pulley.
Homework Equations
mg-T=ma
-RT=1/2MR^2(alpha)
The Attempt at a Solution
I don't know where to start on this problem. I don't know how to combine the 2 equations or relate them. The only thing I know is that if I can find alpha, I can find the tangential acceleration. That would be the same as the acceleration of the object going down, so I could use equations of motion to find out the speed. At least I think that's how it would work. please help.