JAMB Physics 2015 Objective — Question 4
Question 4 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2015 Objective paper, with the correct answer and a full explanation.
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What force has to be exerted on a mass 60kg to give it an acceleration of 10ms⁻² vertically upward? [g=10ms⁻²]
- A. 600N
- B. 1200NCorrect
- C. 400N
- D. 300N
Explanation
F = m(a+g) = 60×(10+10) = 1200N (extra force needed to overcome gravity and accelerate the mass).
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