M3-C4 Flashcards
1
Q
Centre of gravity
A
An imaginary point where the entire weight of an object appears to act
2
Q
Moment of a force
A
Force times perpendicular distance of the line of action of force from the axis or point of rotation
3
Q
Principle of moments
A
The clockwise moment is equal to the anti-clockwise moment
4
Q
Couple
A
A pair of equal opposite forces acting on a body but not in the same straight line
5
Q
Density
A
Mass per unit volume
6
Q
Archimedes principle
A
The upthrust is equal to the weight of the fluid that the body displaces
