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Physics
Physics
Problem
56. Work The angle between a 75 -pound force
F
\mathbf{F}
F
and
A
B
→
\overrightarrow{A B}
A
B
is
60
∘
60^{\circ}
6
0
∘
, where
A
=
(
−
1
,
1
)
A=(-1,1)
A
=
(
−
1
,
1
)
and
B
=
(
4
,
3
)
B=(4,3)
B
=
(
4
,
3
)
. Find the work done by
F
\mathbf{F}
F
in moving an object from
A
A
A
to
B
B
B
.
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