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21. (a) We obtain
ω
==
(
/m
in
.
200
60
20 9
rev / min)(2
rad / rev)
s
rad / s.
π
(b) With
r
= 1.20/2 = 0.60 m, Eq. 1018 gives
(0.60 m)(20.9 rad/s) 12.5 m/s.
vr
=
(c) With
t
= 1 min,
= 1000 rev/min and
0
= 200 rev/min, Eq. 1012 gives
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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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