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Physics
Physics
Problem
Which of the following gives the magnitude of work
W
W
W
done by a constant force
F
F
F
when it acts at an angle
θ
\theta
θ
to the direction of displacement
s
s
s
? a)
F
s
cos
θ
Fs\cos\theta
F
s
cos
θ
b)
F
s
sin
θ
Fs\sin\theta
F
s
sin
θ
c)
F
s
Fs
F
s
d)
F
s
cos
2
θ
Fs\cos^{2}\theta
F
s
cos
2
θ
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