A 4 m long uniform ladder weighing 200 N is placed against a wall making an angle of 55° with the floor. The coefficient of friction between the wall and the ladder is 0.26 and that between the floor and the ladder is 0.36. The ladder in addition to its own weight has to support a man of 900 N at its top end. Calculate the horizontal force F applied to the ladder at the floor level to prevent slipping. If force F is not applied, what will be the minimum inclination of the ladder so that it does not slip when the man is at its top end.
Answers
Answered by
0
Answer:
Explanation:
A uniform ladder 4 m long weighs 200 N. It is placed against a wall making an angle of 60° with the floor. The coefficient of friction between the wall and the ladder is 0.25 and that between the ground and the ladder is 0.35. The ladder in addition to its own weight, has to support a man of 1000 N at the top at B. Calculate: (i) The horizontal force P to be applied to the ladder at the ground level to prevent slipping. (ii) If the force P is not applied, what should be the minimum inclination of the ladder with the horizontal, so that it does not slip with the man at the top?
Similar questions