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Physics
Physics
Problem
Which of the following expressions correctly gives the work
W
W
W
done when a constant force
F
F
F
acts on a body that undergoes a displacement
s
s
s
making an angle
θ
\theta
θ
with the force? a)
W
=
F
s
W = F s
W
=
F
s
b)
W
=
F
s
cos
θ
W = \dfrac{F s}{\cos \theta}
W
=
cos
θ
F
s
c)
W
=
F
s
cos
θ
W = F s \cos \theta
W
=
F
s
cos
θ
d)
W
=
F
s
sin
θ
W = F s \sin \theta
W
=
F
s
sin
θ
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