Mechanics - Forces in Equilibrium (Module 6)

Question 1

Resultant Force

Answer 1

Combination of two vectors.

Question 2

Moment

Answer 2

The moment of a force about a point = the force x to the perpendicular distance from the point to the line of action to the force.

Question 3

Couple

Answer 3

A pair of equal and opposite co-planar forces.

Question 4

Equilibrium

Answer 4

There must be no resultant force and the sum of all the clockwise moments must equal the sum of all the anticlockwise moments.

Question 5

Vector

Answer 5

Is a physical quantity that has magnitude and direction

Question 6

Scalar

Answer 6

Is a physical quantity that has magnitude but no direction.