Ladder friction, Mechanical Engineering

Assignment Help:

Ladder friction:

.: A ladder is an arrangement which is used for climbing on the walls. It consists of two long uprights of wood or iron and connected by many cross bars. These cross bars are called as rungs and provide steps for climbing. The figure given below shows a ladder AB with its end A resting on ground and end B leaning against the wall. The ladder is acted upon by following set of forces:

 

1706_Ladder friction.png

(1)  Weight W acting downwards at the midpoint of it.

(2)  Normal reaction Rh and friction force Fh = µRh at end B leaning against wall. As the ladder has a tendency to slip downwards, friction force will be acting upwards. If the wall is smooth (µ = 0), friction force will be zero.

(3)  Normal reaction Ra and friction force FRa at end A resting on floor. As the ladder, upon slipping, tends to move away from wall, the direction of friction force will be towards wall.

By applying equilibrium conditions, the algebraic sum of horizontal component and vertical component of forces would be zero.


Related Discussions:- Ladder friction

Illustrate kinematics links, (a) Illustrate Kinematics Links, Chin, Mechani...

(a) Illustrate Kinematics Links, Chin, Mechanism and Pair with their classification and examples. (b) Compare between structure and Machine.

Example of equilibrium of body on the rough inclined, Example of Equilibriu...

Example of Equilibrium of body on the rough inclined: Magnitude of minimum force ' p ' that is required to move the body up the plane. At the time when ' p ' is acted with the

Alloys, hardenability of ferrous and non ferrous alloys

hardenability of ferrous and non ferrous alloys

Heat dissipation -various factors in clutch design , Heat Dissipation : Du...

Heat Dissipation : During clutch application, large amount of heat is generated. The rubbing surfaces should have sufficient area and mass to absorb the generated heat. The proper

Pure maths, prove that 0 is an integer

prove that 0 is an integer

Bending strength machine, what is bending strength machine parts of bendin...

what is bending strength machine parts of bending strength machine and description about different parts of bending strength machine description about bending srength machine and

Hydrometer-electrical instruments , Hydrometer: Hydrometer (Figure) is use...

Hydrometer: Hydrometer (Figure) is used to measure the specific gravity of battery fluid (electrolyte). Figure: Hydrometer

Brazing vs welding, Brazing Vs Welding Following are the differences be...

Brazing Vs Welding Following are the differences between brazing and welding. (i)  In brazing, the joint surfaces are not raised to fusion point (or melted) and the joint is

Cnc lathe job clamping system, can we use electrical power chuck for job cl...

can we use electrical power chuck for job clamping in cnc lathe.what are the issues related

Describe the slope - area method, Q. Describe the Slope - Area Method? ...

Q. Describe the Slope - Area Method? In the event of infeasibility of Velocity Area method on account of either rapid rise or fall of floods or lack of equipment or any other r

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd