lim (kl9356) – Homework 13 – Weathers – (17104)
1
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13
questions.
Multiplechoice questions may continue on
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001
10.0 points
The speed of a moving bullet can be deter
mined by allowing the bullet to pass through
two rotating paper disks mounted a distance
66 cm apart on the same axle.
From the
angular displacement 33
.
7
◦
of the two bul
let holes in the disks and the rotational speed
1320 rev
/
min of the disks, we can determine
the speed of the bullet.
33
.
7
◦
v
1320 rev
/
min
66 cm
What is the speed of the bullet? Answer in
units of m
/
s.
002
10.0 points
A wheel starts from rest at
t
= 0 and rotates
with a constant angular acceleration about a
fixed axis. It completes the first revolution in
6
.
2 s.
How long after
t
= 0 will the wheel com
plete the second revolution? Answer in units
of s.
003
10.0 points
A bicycle is turned upside down while its
owner repairs a flat tire.
A friend spins the
other wheel of radius 0
.
4 m and observes that
drops of water fly off tangentially. She mea
sures the height reached by drops moving ver
tically.
A drop that breaks loose from the
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 Fall '08
 Weathers
 Magnetism, Mass, Work, 6 m, 1.9 M, 4.7 m

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