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PHYSICS 140 Study Guide - Midterm Guide: Notecards, Scantron Corporation, Horse LengthExam


Department
Physics
Course Code
PHYSICS 140
Professor
Timothy McKay
Study Guide
Midterm

This preview shows pages 1-3. to view the full 19 pages of the document.
Physics
140,
Winter
2015
Second
Midterm
Exam
March
12,
2015
Form
1
Your
name:
MLw/ctq
Last First
Your
UMID number:
“/‘
OAfS
Fill
in
your
name,
student
ID
number,
and
form
number
on
the
scantron
and
in
the
spaces
above.
All cell
phones,
text
messaging
devices,
computers,
and
communication
devices
of
any
type
must
be
turned
off
and
stowed
out
of
sight.
The
exam
is
closed
book.
You
may
use two
3”
x
5”
(7.5
cm
x
12.5
cm)
notecards
(both
sides).
You
may
also
use
a
calculator
that
cannot
communicate
with
the
outside
world.
You
cannot
share
calculators,
notecards, scratch
paper,
exam booklets,
or
scantrons.
Exam
responses
must
be
based
on your
individual
work
only.
You
must
mark
the
correct
answer
on
the
scantron
to
get
credit for
each problem.
The exam
is
90
minutes
long.
There
are 20
multiple-choice
questions.
All
questions
are
of
equal
value.
There
is
no
penalty
for guessing.
At
the end
of
the
exam,
hand
in
your
scantron
and
show
your
UM
ID.
Constants
and
equations
you
may
find
useful:
x
=
xo
+
v0t
+
at
2
/2
=
vox
+
(i)t
2
=
vo
+
2a(x
xO)
0=
0
+
w
0
-t
+
a,t
2
/2
(O
=
COç
+
at
Wz
2
0
Oz
+
2a(0
Oo)
v
=
Roi
at
=
dvldt
=
Ra
arad
=
v2
/R
=
w
2
R
=
VNB
+
yB/c
(continued
on
the
next
page)

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Table
.2
Moments
of
Inertia
of
Various
Bodies
(a)
Slender
rod.
.LSIS
thiougli center
=
ML
2
(b)
Slender
rod,
axis
through
one
end
I
=
wi
2
(c)
Rectangular
plate,
axis
through
center
+
h2
)
(d)
Thin
rectangular
plate.
axis
along
edge
I
=
Mo’-
(continued
from
the
previous
page)
=
MR
2
-
/7
‘-“ix
I=m
1
r
12
+m
2
r
22
+••
=Jr
2
dm
I
=
‘CM
+
Md
2
g=9.8m1s
2
Fg=mg
Fk
flkN
i-
W
=
j
F•
d.
TKE
=
nv2I2
RKE
=
1w
2
12
GPE
=
mgy
EPE
=
k2
/2
TKE
+
RKE
+
GPE
1
+
EPE
1
+
=
TKEf
+
RKEf
+
GPEf
+
EPEf
F
=
dPEIdx
p
=
my
f
=
f
P
dt
=
FaverlXt
ii
rCM
=
(m
1
ri
+
m
2
r2
+
•)/(m
+
m2
+
•••)
=
frdm/fdm
t=rxF
I
=
M(R3
+
R,
2
)
1
=
(e)
[follow
cylinder
(0
Solid
cylinder
(g)
Thin-walled
hollow
(h)
Solid
sphere
cylinder
I
=
(i)
Thin-walled hollow
sphere
7
1=
212
EuiI,,.
lr.
R

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

1.
A
mass
M
is
subject
to
several forces
over
a
period
of
time.
At
the
beginning
of
this
period,
the
velocity
of
the
mass
is
v1
,
and
at
the
end
of
this
period,
it
is
Vf,
as
shown
in
the
figure
on
the
left.
Which
arrow
in
the
figure
on
the
right
best represents
the
direction
of
the
total
impulse
that
acts
on
the
mass
over
this
time period?
rfv4
-
(b)
(C)
(ci)
(e)
-o
M
H
V4
7
4.
S
0
:
M
VfQ
=
(A
+
2.
Consider
a
spring that
does
not
obey
the Hooke’
s
law.
Dependence
of
the force
exerted
by
the
spring
on
the
spring’s
extension
or
compression
x
is
given
by
the
following
relationship:
F
=
kx
3
(instead
of
F
kx).
Which
of
the
following expressions
may
represent
the elastic
potential
energy
of
such
a
spring?
A
=
--
(
0
j1
‘hi
EPE
initial
final
a)
2/2
b)
2kx
2
c)
32
d)
4kx
4
kx
4
/4
‘C
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