1. A uniform ladder of mass m and length is leaning at rest against a wall at an angle 0.The coefficient of static friction between the floor and the ladder is μ5₁, and thatbetween the wall and the ladder is Ms2.(a) Draw an FBD of the ladder when it is at rest.(b) Find out the measure of in terms of usi and μs2. (Hint: Consider torque and rotationalequilibrium)(c) What is the trajectory, i.e., path of motion, of the center of the ladder as it slides down?(d) Given that the instantaneous speed of the top of the ladder is VÀ at some moment as itslides down, what are the speeds of the other end and the center of the ladder at thesame moment?A2. A ring with mass m is attached to a string. The string holds a block M as well through apulley system. m is moving downward with an acceleration a' relative to the string.What is the friction between the ring m and the string in terms of g? The pulley andstring are both ideal.moM

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Description: 1. A uniform ladder of mass m and length is leaning at rest against a wall at an angle 0.The coefficient of static friction between the floor and the ladder is μ5₁, and thatbetween the wall and the ladder is Ms2.(a) Draw an FBD of the ladder when it

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1. A uniform ladder of mass m and length is leaning at rest against a wall at an angle 0. The coefficient of static friction between the floor and the ladder is MS₁, and that between the wall and the ladder is μs2. (a) Draw an FBD of the ladder when it is at rest. (b) Find out the measure of in terms of us1 and us2. (Hint: Consider torque and rotational equilibrium) (c) What is the trajectory, i.e., path of motion, of the center of the ladder as it slides down?

1. A uniform ladder of mass m and length is leaning at rest against a wall at an angle 0. The coefficient of static friction between the floor and the ladder is MS₁, and that between the wall and the ladder is μs2. (a) Draw an FBD of the ladder when it is at rest. (b) Find out the measure of in terms of us1 and us2. (Hint: Consider torque and rotational equilibrium) (c) What is the trajectory, i.e., path of motion, of the center of the ladder as it slides down?

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 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

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