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Physics
Physics
Problem
Body 1 exerts a force
F
⃗
12
=
3
a
i
^
+
4
a
j
^
N
\vec F_{12}=3a\,\hat i+4a\,\hat j\,\text{N}
F
12
=
3
a
i
^
+
4
a
j
^
N
on body 2. The reaction force
F
⃗
21
\vec F_{21}
F
21
has magnitude
20
N
20\,\text{N}
20
N
. Determine the value of
a
a
a
. a)
3
3
3
b)
5
5
5
c)
4
4
4
d)
2
2
2
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