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Physics
Physics
Problem
Which one of the following expressions correctly represents the work
W
W
W
done by a constant force
F
\mathbf F
F
producing a displacement
s
\mathbf s
s
? a)
W
=
F
s
W = F s
W
=
F
s
b)
W
=
1
2
F
s
W = \dfrac{1}{2}\,F s
W
=
2
1
F
s
c)
W
=
F
⋅
s
W = \mathbf F \cdot \mathbf s
W
=
F
⋅
s
d)
W
=
F
s
sin
θ
W = F s\sin\theta
W
=
F
s
sin
θ
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