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1. We use Eq. 95 to solve for
33
(, )
.
x
y
(a) The
x
coordinates of the system’s center of mass is:
()
(
)
3
11
2 2
com
123
(2.00 kg)( 1.20 m)
4.00 kg 0.600 m
3.00 kg
2.00 kg 4.00 kg 3.00 kg
0.500 m.
x
mx
x
mmm
−+
+
++
==
+
+
=−
Solving the equation yields
x
3
= –1.50 m.
(b) The
y
coordinates of the system’s center of mass is:
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 Spring '08
 Any
 Physics, Center Of Mass, Mass

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