Question Detail
Question
A uniform meter rule is supported at its centre. A 4 N force acts 20 cm from end A. What force at end B restores equilibrium?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Taking moments about centre: F₁d₁ = F₂d₂ → 4×30 = F×60 → F = 2 N.
Hint
Distances measured from pivot.