Question Detail
Question
A force of 150 N is applied perpendicularly to the end of a spanner, 0.3 m from the centre of a nut. What is the moment (torque) produced about the centre of the nut?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The moment of a force is calculated as the product of the force and the perpendicular distance from the point of rotation to the line of action of the force. Here, the force is perpendicular, so the distance is the lever arm. Torque = Force × Perpendicular Distance = 150 N × 0.3 m = 45 Nm.
Hint
Recall the formula for moment: τ = F × d, where d is the perpendicular distance.