An Introduction To Mechanics

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?

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).