Year 12s: what will be the first way you research your future options? >>

Forces on a ladder

A uniform ladder AB mass m rests in equilibrium. . The ladder lies in a vertical plane perpendicular to the wall and makes an acute angle α to the horizontal. A horizontal force P is applied to the ladder in a direction away from and perpendicular to the wall. This force acts at the point one quarter of the way up the ladder. What is the normal force at A

(edited 7 years ago)

image.jpg436.5KB

Reply 1

Sb22312

A is in contact with a smooth vertical wall and B is in contact with a rough horizontal floor. The ladder lies in a vertical plane perpendicular to the wall and makes an acute angle α to the horizontal. The diagram shows this and the working is my attempt at a sloution I need to find an expression for the normal force at A (the normal force at B is mg ) but i'm a bit stuck , I treied like taking moments but it's not going well