PhysicsEquilibrium of forcesWAEC
A uniform metre rule is balanced at its 50 cm mark. A 2 N weight hangs at the 20 cm mark. Where must a 3 N weight hang to keep it balanced?
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Answer: B. 70 cm mark
Moments: 2 × 30 = 3 × d, so d = 20 cm on the other side: the 70 cm mark.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.