JAMB - Physics (1991 - No. 6)

A spring of force constant 1500Nm-1 is acted upon by a constant force of 75N. Calculate the potential energy stored in the string
1.9J
2.8J
3.45J
0.43J

Explanation

P.E = \(\frac{1}{2}\)Fe

= \(\frac{1}{2}\)\(\frac{F}{K}\)

= \(\frac{1}{2}\) x \(\frac{75 \times 75}{1500}\)

= 1.9J

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