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

C++, Jewels can only be removed for polishing from either end of the neckla...

Jewels can only be removed for polishing from either end of the necklace

Explain gear forming, Explain Gear Forming In gear form cutting, cuttin...

Explain Gear Forming In gear form cutting, cutting edge of the cutting tool has a shape similar with the shape of the space among the gear teeth. Two machining operations, mill

Electric discharge phenomenon, ELECTRIC DISCHARGE PHENOMENON The flow of ...

ELECTRIC DISCHARGE PHENOMENON The flow of electricity through metallic solids, or through liquid metals is called Conduction. The electricity  flow through ionic solutions

co2 welding, CO2 Welding CO2 Welding is a variation of GMAW. Here the ...

CO2 Welding CO2 Welding is a variation of GMAW. Here the inert gas is replaced by gas mixtures or carbon dioxide, which are chemically active. The carbon dioxide decomposes in

Calculate the maximum bending moment, A shaft is supported on bearings A an...

A shaft is supported on bearings A and B, 800 mm between centres. A 20° straight tooth spur gear having 600 mm pitch diameter, is located 200 mm to the right of the left hand beari

Working of impulse turbine, Working of Impulse turbine: The technique ...

Working of Impulse turbine: The technique in which multiple system of rotors are keyed to a common shaft, in series and the steam pressure of jet velocity is absorbed in stage

Parallelogram law of forces - mechanics, Parallelogram law of forces: ...

Parallelogram law of forces: The law of parallelogram is used to determine the resultant of two forces acting at the point of a rigid body in plane and is inclined to each o

Baffles, Four diametrically opposed in vessels up to pilot scale. More appl...

Four diametrically opposed in vessels up to pilot scale. More applied in production vessels. Thickness typically 0.1 - 0.05 tank diameter. Baffle height is dependent on the gas

Classification of steam engine , CLASSIFIC A TIO N: (1 )  In acco...

CLASSIFIC A TIO N: (1 )  In accordance to Cylinder Axis: Engine can be vertical or horizontal. (2 )  In accordance to action of steam: Can be single acting or doub

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