Physics WAEC / WASSCE 2006 Work, Energy, Power & Simple Machines
The potential energy in an elastic string of force constant K which has been extended by X metres is expresses as
A
\(\frac{1}{2}k \Box ^2\)
B
\(k \Box ^2\)
C
\(\frac{1}{2}k \Box \)
D
\(k \Box \)
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