Chapter 5 - Torques and Moments of Force

Question 1

Define torque (moment of force)

Answer 1

Torque is the turning effect produced by a force. It is also know as a moment of force

Question 2

What is torque dictated by (two things)

Answer 2

Torque is dictated by the point of application and the line of action of the force

Question 3

Define static equilibrium

Answer 3

For an object to be in static equilibrium, the external forces must sum to zero and the external torques (about any axis) must sum to zero as well.

Question 4

Define center of gravity

Answer 4

Centre of gravity is the point at which the entire mass or weight of the body may be concentrated

Question 5

Define stability

Answer 5

Stability is the ability to return to equilibrium or its original position after being displaced.

Question 6

List the factors that affect stability

Answer 6

i. Weight
ii. Base of support
iii. Height of the centre of gravity within the base of support