Exam+1+--+Winter+2004+--+ANSWERS+_do+not+distribute_

Exam+1+--+Winter+2004+--+ANSWERS+_do+not+distribute_ - F...

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F Shgt tLs wot +)(.-iln I 1. A block of n:ass Mis held motionless on a ftictionless inclined plane by means of a string attacired to a vertical wall as shown in tlie drawing. {y, F'[nr'*qtt Assurne the plane has f iction and the string breaks. wrat nrinimuin value of the coefficient of static fricton, p,, would pr.u# flre block fiom sriding dow' the i'clined plane? @ t*e B) sin d C) zero D) cos d E)1 2. which expression isfalseconceming the vectors shown in the sketch? A A) A+B+ P c^:A1 C1 A'+B' D) C+A= E) C<A+ C=0 B -72 -L/ _B B PageZ
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3.Aplrysicsstudentinalrotairba]loorrascendsverlicallyatcorrsta:rtSpeeo' consider ur. rorio*ingfou, forces that arise in this situation: a*4 Ft = the weight of the hotair balloon Fz th" weight of the studeut -- Fg the forc?of the student pullir:g on tlie earlh Fa the f"t;; ;iii;t hot air balloon pulling on ,.,' Wlrich two fotces forrn arr ,,action-reaction,, pair that obeys Netton's tlrird law? fi, ,ll' lf gtand - Ef \ arid Fz 6 vrand F3 -.-- b rrandF3 - E) Fz and Fa Abasketballislaunchedwitlraninitialspeed"|8.9Y:ylfoliowsthetrajectoryslrown. TIre balle'ters trr.;;ilJ';;6 t ;ft"t it is tuu"ctred' What are the distanoes x andv? Note: The drawing is not to scate' r/- " s , La 5-? rl . 3 co: {5' 5'1"1 Ybt 4. {y'rsrnt{f ' 15'b$'l I ll- X=V.)tioa"l ;''; r"('*l rW -5''13) 7t7 m 5./rn 5.4m I 5.4 m v 0.91 m 0.73 rn i .5.4 m 0.9i m nr , .\ | \= S,L{I('1b)rv (-t.*l(,,*,#:' 11'r' ,xT B) c) 6) "-p) Page 3
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5. A Uatt is shot straight up fio'r the surface of the earlrr with a'i'itial speed of i9'6 ni/s' Negrect any elfects arie to air resistanr. . lto* mucir ti're erapses between trre trxowing of the bajlarrditsreturrrtotlreoriginallaunclrpoirrt? 0^ IJ 0 A) l) c) D) E) 8.00 s 4.00 s 2.00 s 16.0 s 12.0 s ,,?('*"i nt\1L l, 6.Aspring-loadedgunisairrredlrorizontallyarrdisusedtolaunclriderrticalballswithdffirent ittitial speeds,The gun i, u,-" n*9 noriiio' above the floor. Tire balls are
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This note was uploaded on 07/11/2011 for the course PHYSICS 125 taught by Professor Unknown during the Spring '08 term at University of Michigan.

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Exam+1+--+Winter+2004+--+ANSWERS+_do+not+distribute_ - F...

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