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

Relation between stress and strain, Relation between stress and strain: ...

Relation between stress and strain: The relation between stress and strain is generally shown by plotting a stress-strain (σ -e) diagram. Stress can be plotted on ordinate (ve

What is one way shear, What is one way shear? Explain with a suitable demon...

What is one way shear? Explain with a suitable demonstration. One Way Shear This worked out seen a similar case is the case of wall footings. For square footings also the cr

Finite Element Analysis of Pressure Vessel, Need a basic explanation of how...

Need a basic explanation of how to go about doing a plane strain analysis of a pressure vessel

CFD PHOENICS, expert with PHOENICS software experience for CFD free convect...

expert with PHOENICS software experience for CFD free convection

Define application of drilling machine, Application of Drilling machine ...

Application of Drilling machine Drilling machines of dissimilar capacity and configuration are basically used for originating cylindrical holes and occasionally for enlarging t

Parallel foreces, what do you understand by two like and unlike parallel fo...

what do you understand by two like and unlike parallel forces?

SOM, 01-- what is the scope of som? 02-- how can we learn and understand sh...

01-- what is the scope of som? 02-- how can we learn and understand shear force and bending moment diagram?

The leader command-autocad, The Leader Command The Leader command can b...

The Leader Command The Leader command can be used to annotate at any point on a drawing. The command sequence below was used to draw the leader shown in the Figure Below.

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