Moment of a force: Part 2

The cross product: Math you need to know week 4-5

Moment of Force F around point O: MO

Calculating the moment using rectangular components:

Resultant moment: Mro

Moment of a force about a specified axis a-a: Ma

O: any point on a-a

Couple: C

Note: The moment of a couple does not depend on the point one takes the moment about. In other words, a moment of a couple is the same about all points in space.