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

Exam+1+--+Fall+2004+--+ANSWERS+_do+not+distribute_ - ! '...

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! ''15rt-) \25- Fc,t't-L 7ca4 liAt&lernn \ t #;:i1i,#ffilfrom rest from a heieht or4.e m. How long does it rake for the brick tAy 1.0 s _- D B)1.4s Y*tt,q Y*Uffi4t*EA C) 2.0s \ ' D)1.2s #[ffiq,ffi Uq* Bjo.o. fu*?* *t '"{*tffi-b}tr \er * t'*t 2. A system of two calles.supports u{,G"il as shown. What is the tension rn the horizontal cable? A) 1s0 N 6p zoo N C) 87N 4:ooN E) '170 N % f IjL -Frrstn C3cib Frcot{ge'1 -\ o =IE5N frr Fre \5() te.,n 30 =& X \':Lsl,6=z(n - 6r,f Fzy *<) 3oo r "tz? *? e' g 11r$*ofts)* t5-{.} FrL = 3oc: *r -1r lY Page2
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{ 3. A 10-kg block is p-ushed against a vertical wall by a horizontal force of 100 N i_s shown in tfr, figure. The co:fc4lla{staric fricti *, Oubetvesn the block and the ,ffir1t19g7and the coefficient ofkinetic fricrion, Fr,is *1yl .whrch one of the folrowing starements is trul iitrre block is initially at rest? F6 'l r-t o, f,||?**^:lt":lj:^1}ry_-.+t because the coefficient of kinetic frictiontr?J 1e'tr than of static friction. B) c) D) g The block will remain at rest because friction is greater than Tre block slides down the wail with an acceleration ofmagnitude 3.g m/s2. rhe total force exert:d on the block bt,t,,;;ir-i;t,#;ffif;Iy directed. The block wil sride down the war because force "f ili; can be no larger than 60 N. f, 1 ,(n(t (lor*) #$ a Gel Q=. .Llo(to*) Ltocl fr = t,h fttf, r r r'\, fr}* F-,'tJ- 9&-ulocl hft tOq e 3OA 4' At a location where g 9'90 rnlqz, an objectis thrown vertically down with an initial speed of l'00 m/s. After3TdrTfr?object w'r rruu. t uu"rea, A) 125 m -" . ."*"-. , -r :-. ."., @ rzz.s m ? C) 245m I D)z;om | { E)255m I I vl ! kfh s va ? \Jo s l, 0o *ndt se* ks V6b + *o*o Page 3 k H tffi\4 *flq,m}ilru',t
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t #lit the angle between the vectors A and -A when they are drawn from a common (9' 180" B) 360' c) 90o D) 00 E) 270o ffi w Uff*ffi.ry sl.rown is in levet flighr at an alritude 51)o rn \"' A) 150 m B) 295 m 0)qn^ D) 2550 m E) 15,000 m l5p*h" _Ltl$nn lhr T-* 'I,r* 'ffi.," I ntin 6q)"$cg V** Ht, rr?
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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+--+Fall+2004+--+ANSWERS+_do+not+distribute_ - ! '...

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