# C9 - into motion by the falling block What is the speed of...

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C9: Rotational Energy

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Find the moment of inertia of a rigid rod of mass M and length L rotating about an axis at the center of the rod. Assume the mass in the rod is uniformly distributed along its length.
A block of mass m hangs by a string from a pulley of mass M and radius R. The system is released from rest. The string is wrapped around the pulley so it does not slip on the pulley, and the pulley is therefore set

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Unformatted text preview: into motion by the falling block. What is the speed of the block after it has fallen a vertical distance h? m M R The pulley is a solid cylinder with moment of inertia I = 1 2 MR 2 A solid cylinder and a hoop have the same radius. They both start at rest at the top of a ramp and then roll down. Which one gets to the bottom Frst?...
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## This note was uploaded on 03/01/2012 for the course PHY 9HA taught by Professor Markusluty during the Fall '10 term at UC Davis.

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C9 - into motion by the falling block What is the speed of...

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