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August 21, 2014

Homework Help: Physics

Posted by Elizabeth on Monday, November 24, 2008 at 9:15pm.

Blocks of mass m1 and m2 are connected by a massless string that passes over a frictionless pulley. Mass m1 slides on a frictionless surface. Mass m2 is released while the blocks are at rest. The pulley is a solid disk with a mass mp and a radius R. Use conservation of energy to find the speed of mass m1 after it has traveled a distance x.

I dont understand what to do here. I know conservation of energy is E=K +U...so Ki + Ui = Kf + Uf but I have no idea how to use the rest of the information to do this. I'm also assuming that you need to get the moment of inertia and use it for something...but I don't know what...

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