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The turning effect of a force about a fixed point is measured by the product of the force and which quantity?
APerpendicular distance from axis
BTime for which the force acts
CMass of the rotating body
DVelocity of the moving body
Answer & Solution
Correct answer: A. Perpendicular distance from axis
1. The turning effect of a force is the moment of the force (torque).
2. It is given by τ = F x d.
3. Here d is the perpendicular distance between the axis and the line of action of the force.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 1 "Laws of Motion", p.12_
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