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Physics
Physics
Problem
Which of the following gives the work
W
W
W
done by a constant force of magnitude
F
F
F
acting at an angle
θ
\theta
θ
to the direction of displacement
s
s
s
? a)
W
=
F
s
W = F s
W
=
F
s
b)
W
=
F
s
cos
θ
W = F s \cos\theta
W
=
F
s
cos
θ
c)
W
=
F
s
sin
θ
W = F s \sin\theta
W
=
F
s
sin
θ
d)
W
=
1
2
F
s
cos
θ
W = \dfrac{1}{2}\,F s \cos\theta
W
=
2
1
F
s
cos
θ
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