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100. (a) In unit vector notation,
ma
→
= (
−
3.76 N) i
^
+
(1.37 N) j
^
.
Thus, Newton’s second law leads to
F
2
→
=
→
–
F
1
→
=
(
−
6.26 N) i
^
−
(3.23 N) j
^
.
(b) The magnitude of
2
F
G
is
22
2
( 6.26 N)
( 3.23 N)
7.04 N.
F
=−
+
−
=
(c) Since
2
F
G
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 Spring '08
 Any
 Physics

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