PhysicsEquilibrium of forcesJAMB
A uniform metre rule is balanced horizontally on a pivot at its 50 cm mark by the two weights shown. Find W.
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Answer: C. 12 N
Moments about the pivot: W × 20 cm = 6 N × 40 cm, so W = 12 N. The rule's own weight acts at the pivot.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.