MOMENTS (short summary) Flashcards
1
Q
What is a moment?
A
Is the turning effect produced by a force
2
Q
Moment equation?
A
Moment of a force about a point (Nm) = Force (N) x perpendicular distance from the force to the point (m)
3
Q
What is a couple or a torque?
A
- Turning effect due to two equal forces acting in an opposite direction
4
Q
Couple equation?
A
Couple (Nm) = Magnitude of one force (N) x perpendicular distance between two forces in the couple (m)
5
Q
What does the principle of moments state?
A
Sum of the clockwise moments about any point = sum of the anti-clockwise moments about that point
6
Q
What is the centre of gravity?
A
Is the point at which the entire weight appears to act
7
Q
Will an object balance if support at its centre of gravity?
A
YES
8
Q
Where wil a freely suspended object come to rest?
A
At its centre of gravity.
