78. We choose ± directions such that the initial angular velocity is
ω
0
= – 317 rad/s and
the values for
α
,
τ
and
F
are positive.
(a) Combining Eq. 1012 with Eq. 1045 and Table 102(f) (and using the fact that
= 0)
we arrive at the expression
τ
ωω
=
F
H
G
I
K
J
−
F
H
G
I
K
J
=−
2
5
2
5
2
0
2
0
MR
t
MR
t
.
With
t
= 15.5 s,
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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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