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10homerwork08

# 10homerwork08 - Husain Zeena Homework 8 Due 4:00 am Inst H...

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Husain, Zeena – Homework 8 – Due: Oct 21 2003, 4:00 am – Inst: H L Berk 2 If the radius of the disc is given by R , the radial acceleration on the rim is, a r = R ω 2 The distance a point on the rim moves in time t is, s = R θ = R ω t 005 (part 2 of 4) 10 points Determine the linear speed at a point 1 . 8 cm from its center. Correct answer: 2 . 3185 m / s. Explanation: 006 (part 3 of 4) 10 points Determine the radial acceleration of a point on the rim. Correct answer: 574 . 043 m / s 2 . Explanation: 007 (part 4 of 4) 10 points Determine the total distance a point on the rim moves in 2 . 73 s. Correct answer: 12 . 1667 m. Explanation: 008 (part 1 of 1) 10 points A circular disk with a mass m and radius R is mounted at its center, about which it can rotate freely. The disk has moment of inertia I = (1 / 2) mR 2 . A light cord wrapped around it supports a weight mg . Find the total kinetic energy of the system, when the weight is moving at a speed v .
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