A metre rule is pivoted at its mid-point with a vertical force of 10N hanging...
PHYSICS
JAMB 2016
A metre rule is pivoted at its mid-point with a vertical force of 10N hanging from the distance 30cm from the mid-point. At what distance must a 15N force hang to balance the ruler horizontally?
- A. 30cm
- B. 10cm
- C. 20cm
- D. 25m
Correct Answer: C. 20cm
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