2009-CVb-04 - 2009 Dept. Civil Eng. B (55+1): General...

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2009 Dept. Civil Eng. B (55+1): General Physics test 04 (2009/12/31) Name: ________ ID: ________ Multiple Choice Identify the choice that best completes the statement or answers the question ___ 1. A disk (radius = 8.0 cm) that rotates about a fixed axis starts from rest and accelerates at a constant rate to an angular velocity of 4.0 rad/s in 2.0 s. What is the magnitude of the total linear acceleration of a point on the rim of the disk at the instant when the angular velocity of the disk is 1.5 rad/s? A) 24 B) 16 C) 18 D) 34 E) 44 cm/s 2 . ___ 2. Two particles ( m 1 = 0.20 kg, m 2 = 0.30 kg) are positioned at the ends of a 2.0-m long rod of negligible mass. What is the moment of inertia of this rigid body about an axis perpendicular to the rod and through the center of mass? A) 0.48 B) 0.50 C) 1.2 D) 0.80 E) 0.70 kg·m 2 ___ 3. A uniform rod of mass M = 1.2 kg and length L = 0.80 m, lying on a frictionless horizontal plane, is free to pivot about a vertical axis through one end, as shown. The moment of inertia of the rod about this axis is given by ML 2 . If a force ( F = 5.0 N, θ = 40º) acts as shown, what is the resulting angular acceleration about the pivot point? A) 16 B) 12 C) 14 D) 10 E) 33 rad/s 2 . ___ 4. The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track. What is her angular displacement (in rad ) in the first 12 minutes? A) 0 B) 2 C) 4 D) 16 E) 32. ___ 5. A solid cylinder of radius
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This note was uploaded on 09/01/2011 for the course PHY 303 taught by Professor Erskine/tsoi during the Spring '08 term at University of Texas at Austin.

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2009-CVb-04 - 2009 Dept. Civil Eng. B (55+1): General...

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