We start by showing that the sum of the moments of the forces on a system about the line of action of the resultant force is 0.
The Centre of Gravity of a system is a unique point on the line of action of the resultant gravitational force on a system.
Check out KeysToMaths1 for more tutorials and solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug
read more