Question Detail

PHY 101 Mechanical Equilibrium and Rotational Dynamics Objective Question
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Question

The turning effect or moment produced by a couple is calculated as which of the following?
Options
A The product of one of the forces and the distance from the pivot to the midpoint of the couple.
B The product of one of the forces and the perpendicular distance between their lines of action.
Correct Answer
C The sum of the individual moments of each force about any point.
D The product of the two forces and the distance between them.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The moment (torque) of a couple is constant and independent of the pivot point. It is calculated as the magnitude of one of the forces multiplied by the perpendicular distance (the lever arm) separating the lines of action of the two forces.

Hint

The 'lever arm' for a couple is the distance between the two forces.

Question Info

Course: PHY 101
Topic: Mechanical Equilibrium and Rotational Dynamics
Type: Objective
Difficulty: Not specified
Question 565 of 1250
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