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Physics
Physics
Problem
Select the correct expression for the work done by the restoring force when a particle executing SHM moves from displacement
x
1
x_1
x
1
to
x
2
x_2
x
2
. a)
W
=
−
1
4
k
(
x
2
2
−
x
1
2
)
W=-\dfrac14 k\,(x_2^{2}-x_1^{2})
W
=
−
4
1
k
(
x
2
2
−
x
1
2
)
b)
W
=
1
2
k
(
x
1
2
−
x
2
2
)
W=\dfrac12 k\,(x_1^{2}-x_2^{2})
W
=
2
1
k
(
x
1
2
−
x
2
2
)
c)
W
=
1
2
k
(
x
2
2
−
x
1
2
)
W=\dfrac12 k\,(x_2^{2}-x_1^{2})
W
=
2
1
k
(
x
2
2
−
x
1
2
)
d)
W
=
1
2
k
(
x
2
−
x
1
)
2
W=\dfrac12 k\,(x_2-x_1)^{2}
W
=
2
1
k
(
x
2
−
x
1
)
2
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