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Physics
Physics
Problem
Which expression gives the work
W
W
W
done by a constant force of magnitude
F
F
F
that makes an angle
θ
\theta
θ
with the direction of a straight-line displacement of magnitude
d
d
d
? a)
W
=
F
d
(
cos
θ
)
2
W = F d (\cos\theta)^{2}
W
=
F
d
(
cos
θ
)
2
b)
W
=
F
d
cos
θ
W = F d \cos\theta
W
=
F
d
cos
θ
c)
W
=
1
2
F
d
cos
θ
W = \dfrac{1}{2} F d \cos\theta
W
=
2
1
F
d
cos
θ
d)
W
=
F
d
sin
θ
W = F d \sin\theta
W
=
F
d
sin
θ
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