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Problem
Problem
A force
F
=
−
k
x
2
F = -\frac{k}{x^2}
F
=
−
x
2
k
(
x
≠
0
x \neq 0
x
=
0
) acts on a particle in
x
x
x
-direction. Find the work done by this force in displacing the particle from
x
=
+
a
x = +a
x
=
+
a
to
x
=
+
2
a
x = +2a
x
=
+
2
a
. Here,
k
k
k
is a positive constant.
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