Reference: M47
Category: Mechanics
Purpose: This is an example of three forces in equilibrium.
Description: In order for the ladder to be stable, the resultant forces from the wall and the floor must meet directly above the centre of mass of the ladder. If the frictional components are insufficient, they cannot do so and the ladder will slip. If the moveable mass is near the top of the ladder, the requirements on the frictional forces become more severe. Eventually the ladder will slip.
