JAMB Physics 2025 Objective — Question 9
Question 9 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2025 Objective paper, with the correct answer and a full explanation.
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A 5 kg mass hangs from a spring balance in an elevator accelerating upward at 3 ms⁻². The balance reads:
- A. 35 N
- B. 50 N
- C. 65 NCorrect
- D. 80 N
Explanation
R=m(g+a)=5(10+3)=65 N.
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