Newton's motion laws seems to only apply to the centres of masses for the objects. This becomes evident when we look at more complex objects (tennis rackets).
Usually, for uniform objects, the centre of mass is at the middle of the width and the length (and the height)
A mass being suspended.
When the centre of mass is within the base, it is stable.
Rotational equilibrium means its not rotating. Translational equilibrium means its not moving, i.e. no net force, which should be familiar. (Yr 11)
If an object is in rotational AND translational equilibrium, we say it is in static equilibrium.
Given this information, we can analyse the forces! Yay!
