WAEC Physics 2014 Objective — Question 11
Question 11 of 50 from the West African Examinations Council (WAEC) Physics 2014 Objective paper, with the correct answer and a full explanation.
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The diagram illustrates a uniform metre rule which is balanced on a pivot by some masses (M and 100g). Calculate the value of M.
- A. 500.0g
- B. 400.0g
- C. 44.4g
- D. 25.0gCorrect
Explanation
Using the principle of moments (sum of clockwise moments = sum of anticlockwise moments) with the distances shown in the diagram, M = 25.0g.
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