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()
2
app
10N
10kg 0.60 m s
4.0 N.
ss
Ff
m
a
f
−=
¡
=−
=
In unit vector notation, we have
ˆ
( 4.0 N)i
s
f
G
which points leftward.
(b) With
R
= 0.30 m, we find the magnitude of the angular acceleration to be

α
 = 
a
com
 /
R
= 2.0 rad/s
2
,
from Eq. 116. The only force not directed towards (or away from) the center of mass is
G
f
s
, and the torque it produces is clockwise:
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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