Will the ladder slip? A ladder of length l = 4m rests against a wall at 0 = 60°. Assume that there is no friction between the ladder and the vertical wall but there is friction between the ground and the ladder with µ = 0.5. A person weighing 700 N starts to climb up the ladder. 1. Can the person make it to the top safely (without the ladder slipping)? If not, then find the distance d along the ladder that the person can climb safely. Ignore the weight of the ladder in comparison to the weight of the person. 2. Does the "no slip" distance d depend on 0? If yes, then find the angle 0 which makes it safe for the person to reach the top.

Will the ladder slip? A ladder of length l = 4m rests against a wall at 0 = 60°. Assume that there is no friction between the ladder and the vertical wall but there is friction between the ground and the ladder with µ = 0.5. A person weighing 700 N starts to climb up the ladder. 1. Can the person make it to the top safely (without the ladder slipping)? If not, then find the distance d along the ladder that the person can climb safely. Ignore the weight of the ladder in comparison to the weight of the person. 2. Does the "no slip" distance d depend on 0? If yes, then find the angle 0 which makes it safe for the person to reach the top.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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