Forces - Vectors & Moments

Question 1

Centre of Gravity

Answer 1

The C.G of an object is defined as the point where all the weight of the object may be considered to act

Question 2

Moment of Force

Answer 2

Moment of a force about a point is the magnitude of the force, multiplied by the perpendicular distance of the point from the line of the force.

Question 3

Principle of Moments

Answer 3

For any object that is in equilibrium, the sum of the clockwise moments about any point provided by the forces acting on the object equals the sum of the anticlockwise moments about the same point.

Question 4

Torque of a Couple

Answer 4

Product of one of the forces of a couple and the perpendicular distance between them.