JAMB Physics 2023 Objective — Question 26

Question 26 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2023 Objective paper, with the correct answer and a full explanation.

A 120 g mass is placed at the 10 cm mark on a uniform metre rule making it balance horizontally on a fulcrum at 35 cm. Mass of the rule:

• A. 200 gCorrect
• B. 60 g
• C. 140 g
• D. 110 g

Explanation

Moments: 120×25=m×15 → m=200 g.

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