Exam
Name___________________________________
MULTIPLE
CHOICE.
Choose
the
one
alternative
that
best
completes
the
statement
or
answers
the
question.
1) A
tire
is
rolling
along
a
road,
without
slipping,
with
a
velocity
v.
A
piece
of
tape
is
attached
to
the
tire.
When
the
tape
is
opposite
the
road
(at
the
top
of
the
tire),
it's
velocity
with
respect
to
the
road
is
A) 1.5
v
.
B) 2v
.
C)
v.
D) The
velocity
depends
on
the
radius
of
the
tire.
1)
2) A
cylinder
is
observed
to
be
rolling
freely
at
constant
speed
on
a
horizontal
surface.
Which
of
the
following
statements
is
true?
A) It
is
not
possible
for
the
cylinder
to
roll
unless
friction
is
present.
B) It
is
possible
that
the
cylinder
is
both
rolling
and
sliding
at
the
same
time
(i.e.,
that
v
,
the
speed
of
the
centerpoint,
is
not
equal
to
rw).
C) If
the
cylinder
is
rolling
without
slipping,
there
must
be
a
non

zero
friction
force
exerted
by
the
surface.
D) If
friction
is
present,
it
is
not
possible
for
the
motion
to
occur
without
loss
of
energy.
E) Even
if
the
surface
has
friction,
the
cylinder
cannot
roll
without
slipping.
2)
TRUE/FALSE.
Write
'T'
if
the
statement
is
true
and
'F'
if
the
statement
is
false.
3) Two
unequal
weights
are
connected
by
a
massless
string
which
passes
over
a
frictionless
pulley.
If
the
pulley
has
no
appreciable
mass,
the
tension
in
the
string
is
the
same
on
both
sides
of
the
pulley;
but
if
the
pulley
has
mass,
the
tension
will
not
be
the
same
on
both
sides
of
the
pulley.
3)
4) There
must
be
equal
amounts
of
mass
on
either
side
of
the
center
of
mass.
4)
5) If
two
objects
have
the
same
moment
of
inertia,
they
must
have
the
same
mass.
5)
6) If
you
deform
an
object,
you
do
not
change
its
mass
but
you
may
change
its
moment
of
inertia
and
the
location
of
its
center
of
mass.
6)
7) If
two
forces
of
equal
magnitude
act
on
an
object
that
is
hinged
at
a
pivot,
the
force
acting
farther
from
the
pivot
must
produce
the
greater
torque
about
the
pivot.
7)
MULTIPLE
CHOICE.
Choose
the
one
alternative
that
best
completes
the
statement
or
answers
the
question.
8) A
force
in
the
+
y
direction
applied
at
the
point
x
=
2.3
m,
y
=
1.4
m
gives
rise
to
a
torque
of
71
N
·
m
about
the
origin.
Find
the
magnitude
of
the
force.
8)
1
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Point
P
is
on
the
rim
of
a
wheel
of
radius
2.0
m.
At
time
t
=
0,
the
wheel
is
at
rest,
and
P
is
on
the
x

axis.
The
wheel
undergoes
a
uniform
angular
acceleration
of
0.01
rad/s
2
about
the
center
O.
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 Spring '08
 Morrison
 Angular Momentum, Friction, Mass, Moment Of Inertia

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