JAMB Physics 2017 Objective — Question 3
Question 3 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2017 Objective paper, with the correct answer and a full explanation.
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A string of length 5m is extended by 0.04m when a load of 0.8kg is suspended at the end. How far will it extend if a force of 16N is applied? [g=10ms⁻²]
- A. A. 0.04m
- B. B. 0.12m
- C. C. 0.01m
- D. D. 0.08mCorrect
Explanation
Weight=mg=8N gives F=Ke, K=8/0.04=200Nm⁻¹. For F=16N, e=16/200=0.08m.
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