engineering recuitment GATE CE 2023-24 Test Series Engineering Mechanics Equilibrium and Friction Friction
A ladder 5 m long, weighing 100 N is resting against smooth wall and a rough horizontal floor whose coefficient of friction is 0.3. A person weighing 500 N is climbing along the ladder and the ladder makes an angle of 30° with floor, then which of the following statements are true?
1
The ladder slips when the man climbed at 53.92 cm from the bottom
2
The ladder slips when the man is at the centre of the ladder
3
The ladder does not slip when the man is climbing
4
Normal reaction against the wall is 180 N