JAMB Physics 2014 Objective — Question 9

Question 9 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2014 Objective paper, with the correct answer and a full explanation.

An object of weight 80kg on earth is taken to a planet where the acceleration due to gravity is one-third of its value on earth. The weight of the object on the planet is [g=10ms⁻²]

A. 12N
B. 27NCorrect
C. 36N
D. 48N

Explanation

g_planet = (1/3)×10 = 3.33m/s². Using the source's own worked solution (which treats the mass as 8kg rather than the stated 80kg), W = 8×3.33 ≈ 27N. Note: with the mass literally read as 80kg, the computed weight would be 266.4N, which does not match any option — this discrepancy exists in the original source question.

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