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82. (a) Using Eq. 216 for the translational (centerofmass) motion, we find
vv
a
xa
v
x
2
0
2
0
2
2
2
=+
¡
=−
Δ
Δ
which yields
a
= –4.11 for
v
0
= 43 and
Δ
x
=
225
(SI units understood). The magnitude of
the linear acceleration of the center of mass is therefore 4.11 m/s
2
.
(b) With
R
= 0.250 m, Eq. 116 gives
2
  /
16.4rad/s .
aR
α
==
If the wheel is going rightward, it is rotating in a clockwise sense. Since it is slowing
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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, Acceleration, Center Of Mass, Mass

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