WAEC Physics 2022 Objective — Question 49
Question 49 of 50 from the West African Examinations Council (WAEC) Physics 2022 Objective paper, with the correct answer and a full explanation.
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The basic principle of operation of a beam balance is
- A. Archimedes' principle
- B. law of flotation
- C. Hooke's law
- D. principle of momentsCorrect
Explanation
A beam balance works on the principle of moments — balancing the moments of the forces on either side of the pivot.
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