Moments Flashcards
0
Q
Under what conditions are two forces a couple?
A
The forces must be opposite in direction
The forces must have the same magnitude
They must be parallel
1
Q
What are the two conditions that must be met in order for an object to be in equilibrium?
A
The sum of the forces must be 0
The sum of the moments about any point must equal 0
2
Q
Define ‘torque of a couple’
A
The turning effect caused by two equal and opposite forces when their lines of actions are different
Definition: Torque of a couple = one of the forces x perpendicular distance between the forces
3
Q
Define moment of a force
A
Moment = force x perpendicular distance from pivot
