JAMB Physics 2018 Objective — Question 8
Question 8 of 38 from the Joint Admissions and Matriculation Board (JAMB) Physics 2018 Objective paper, with the correct answer and a full explanation.
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A force of magnitude 500N is applied to the free end of a spiral spring of constant 1.0×10⁴Nm⁻¹. The energy stored in the stretched spring is
- A. 12.5JCorrect
- B. 25J
- C. 5×10⁶J
- D. 2.5×10⁶J
Explanation
e = F/K = 500/10000 = 0.05m. Energy stored = ½Fe = ½×500×0.05 = 12.5J.
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