A long ladder weighing 100 N is rested against a smooth wall. The bottom of the ladder is 1.5m from the wall and the top of the ladder is 4m above the ground. An 80 kg person is standing in the middle of the ladder. The ladder is not moving.
1) Draw a free body diagram of the ladder.
2) What is the magnitude of the normal force of the ground on the ladder?
3) What is the magnitude of the normal force of the wall on the ladder?
4) What is the magnitude of the frictional force of the ground on the ladder?