Centres of mass

Every body has a centre of .

For a human, the centre of is somewhere in the and the line from it must be within the enclosed by its or else it will over.

The of mass of a regulary body that has the same throughout is at its . In other cases it can be by an .

The of a body is by:
(i) its centre of mass, and
(ii) the area of its

equilibrium is when a body moves away from its position when it is slightly displaced and then released.

equilibrium is when a body in its position when .

equilibirum is when a body is slightly displaced and when it is released it to its position.