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Physics
Physics
Problem
Which expression gives the total mechanical energy of a horizontal mass–spring system oscillating with amplitude
A
A
A
and spring constant
k
k
k
? a)
E
=
k
A
E=kA
E
=
k
A
b)
E
=
1
2
k
A
2
E=\tfrac{1}{2}kA^{2}
E
=
2
1
k
A
2
c)
E
=
1
2
k
A
E=\tfrac{1}{2}kA
E
=
2
1
k
A
d)
E
=
k
A
2
E=kA^{2}
E
=
k
A
2
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