Principle of moments Flashcards
1
Q
Moment
A
Moment = force * perpendicular distance from the pivot
2
Q
Unit of moments
A
Newton-metres (Nm)
3
Q
Couple
A
Two forces acting in opposite directions, not in the same line, which causes rotation. Produce an unbalanced moment.
4
Q
Centre of gravity
A
The point at which we take the weight of an object to act
5
Q
Centre of mass
A
The point at which we take the mass of an object to be concentrated
6
Q
Principle of moments
A
“When an object is in rotational equilibrium, the sum of the clockwise moments about any point is equal to the sum of the anticlockwise moments about the same point”
7
Q
Reaction
A
A reaction force is applied by the point of support on the object
