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GAP1_Exam3

# GAP1_Exam3 - .J Nmne P hysics D epartment Duquesne...

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, • . .. ..J .• Nmne ____________________ __ Physics Department Duquesne University . PH211-01 GAP I , " , " '. Exam 3 'December 9, 2008 SHOW YOUR WORK ON ALL PROBLEMS, INCLUDING MULTIPLE CHOICE. TIris test covers Chapters 8 - 10. There are 5 multiple-choice questions worth 5 points-each, and 5 , long-answer questions worth 15 points each . There are 100 points possible. Partial credit will be given, but only if you. S~ow your work and yourreasomng is clear!!! i Moments of inertia - 1. solid disk (about an axis through its center and perpendicular to the plane of the disk): 1 = Y, MR' 2, rod (about an axis through its ' center and perpendicular to it) 1=1/12 MR' , 1. Two particles interact by conservative forces and - no other forces act. They complete round . · ~ trips, endinS, at the points -where they started, OV ,e, this trip: C<n~y",,*,v. ---->,Ie " ~o' : 6U::'O ~ ,,-"'t>-,-,;. \$~ Ai<-=-" , -- I - ~ ~~~ ) A) the total kinetic energy might have a different value at the beginning and end - B) the total potential energy might have a differ¢nt value at the beginning and end I C) the total mechtmical energy might bave a diff~~eDt value at the beginning and end t D the total linear momenturi:l might have different ' values at the beginning and end i r E) none of the above . At! = 0 ~") ~~ ~~~t- ~ 0 ~ sus:~ · t .' ' I ,- 2. As a particle moves aloilg the x axis it)s acted 00 by a conservative force. Tb,e potential .

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GAP1_Exam3 - .J Nmne P hysics D epartment Duquesne...

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