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Physics
Physics
Problem
A force acts along the x-axis according to
F
=
k
x
F = kx
F
=
k
x
, where
k
k
k
is a positive constant. What is the work done when the particle moves from
x
=
0
x = 0
x
=
0
to
x
=
a
x = a
x
=
a
? a)
3
4
k
a
2
\dfrac{3}{4} k a^{2}
4
3
k
a
2
b)
k
a
2
k a^{2}
k
a
2
c)
1
2
k
a
2
\dfrac{1}{2} k a^{2}
2
1
k
a
2
d)
1
3
k
a
2
\dfrac{1}{3} k a^{2}
3
1
k
a
2
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