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ICSE Class 10 Physics Question 1 of 25

Model Paper 1 — Question 1

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Question

Question 1(i)

For producing the maximum turning effect on a body by a given force, the perpendicular distance of the line of action of force from the axis of rotation should be :

  1. minimum
  2. it does not matter
  3. maximum
  4. zero
Answer

maximum

Reason — The turning effect on the body about an axis is due to the moment of force (or torque) applied on the body which is given by :

Moment of force = Force × Perpendicular distance of the line of action of the force

For producing maximum turning effect on a body by a given force, the force is applied on the body at a point for which the perpendicular distance of the line of action of the force from the axis of rotation is maximum.