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Test 2 Fall 2005

Test 2 Fall 2005 - AEM 264 Dynamics November 9 2005 4:00...

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Unformatted text preview: AEM 264, Dynamics, November 9, 2005, 4:00 ... 4:50 Test No. 2 l. A small mass of weight W is released from rest at position A and slides down a smooth circular path or radius R. Fit the foot of the path, the small mass I strikes an identical that-isr which is at rest. The I ,f—if/g 2" t, a. coefficient of restitution between the masses is {1.50. (a) {2121 points) Find the velocities of the masses after the impact and the percentage ofenerfl Ins—t in the impact. {In} {20 points) After the impact, the mass at the foot of the incline [originally at rest) slides on a horizontal surface under the influence of friction with px = t}. it} _ Find the distance , traveled by the mass before comin to rest. 2. A wheel of' radius r rolls without slipping to the right in such a was that the velocity of the center is no, as —------_—"_'"'_|"/%.-i ——-— __ _ ..... ".2, .. ..... _ shown. A straight rod of length 3r is connected to ¢ the wheel at A and to a slider at point B. I? (a) {ii} points) Find the velocityr of point A. “EV/{H (b) {It} points} Find the angular velocityr ofhar AB. (c) (10 points} Find the velocity of point B. 777-72-4/37'77791-77/ 77"}"?'?77'/—/7'7'.'-"/7: rotating with constant angular speed of lOrprn. (a) {15 points) Find the angular velocities of bars ED and CD at the instant shown. {in} {I 5 points] Find the angular accelerations of hats ED and CD at the instant shown. ...
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