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spring2003_solutions

# An Introduction To Mechanics

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Physics l)6 FinalExam , May 13,2003 b-- Y Ill I Name- ,\ k I . 2 hours 30 minutes. ' Please check to see that you have an exarn widr t3 consecatively numbered pages, ineluding a formula sheei at the end. ' Pleaee shorv thestep\$ of your work for panialcredit. G:aders will look only at the fronts ofpages (not rhe backs or scralch paper), unless you speci{ically directusto look &ere. . No calculators, notes. orbooks. . Ifa question is confusingly worded, please ask for clarification. Good luckl l'*7' -points 8. -- poinls 9. points 10. -""_-- points I l. _ points 12. -"-*-points 13' --- points 14' --poi*s Total _ poln(s nnqe I nf 1?

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Q*estioas I through 7 are multiple choice questions. Three points each. No partial credi: You must lyrite the lctter for your choice ia the lrox at the right. l. A book rests on a table. What is the 3'd Law "interaction partner" o[ the rveight of the book (1.e., the gravitational fbrce on the book)? .1'. The lorce on tir: br;ok due to the table B. The lbrce on tbe table due to the book C. 'lhe lbrce on the earth due to the book D. The force on the lable due to the ear:h 2. A 6 m long boat wilh a n*ss of 100 kg floats frictionlessly on the water. Tbc boat is initially at rest relative to thewater. Then, a sailor, whose mass is 50 kg, walks from theback to thefront of theboat. 9ow far does the sailor A. B. C. D. move (relative to the water)? 0m ; 4m 3m 4rn 6m iooL|,) = teo(9-x) t 'aG-*) - x=z Z LU W. K=i 3. A pa*icle is released from rest on the top of one of two frictionless tracks. On which track should it be released if you want it to get to the bottom of the track as\$oon aspossible? A. track {a). 3. track {b). C. same time to get to thebottom of (a) or (b).
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