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

Projection welding, Projection Welding Projection welding is similar to...

Projection Welding Projection welding is similar to spot welding but for the fact that the welding takes place at the projections on the surface of the metals and flat shaped e

Steam power plant , Steam power plant: Steam power plant converts heat...

Steam power plant: Steam power plant converts heat energy Q from combustion of fuel into mechanical work W of shaft rotation which is used to generate electricity. This ty

Plant Design assignment on heat exchanger pressure vessels, Would I be able...

Would I be able to get the help I need with multiple effect evaporator with vaccuum P&ID for boiler and steam turbine system as well as perforated plates in a clarifier done in a

Tropical geometric information of solids, Tropical geometric information of...

Tropical geometric information of solids A face is surrounded by a set of vertices. Using the right-handed rule, the ordering of these vertices for describing a particular face

Reactions at grouted end of cantilever beam, Reactions at grouted end of ca...

Reactions at grouted end of cantilever beam: Q: Find reactions at grouted end of cantilever beam shown in figure given below     Draw free body diagram of the beam

Manufacturing , Differentiate between hot working and cold working process

Differentiate between hot working and cold working process

Explan the drive or traction unit, Explan the Drive or traction unit   ...

Explan the Drive or traction unit   Hydrostatic drive is provided for traction with a two speed gear-box. High speed is for travelling and low speed for working. Speed is in

Automobiles industry growth , AUTOMOBILES INDUSTRY GROWTH: The Indian auto...

AUTOMOBILES INDUSTRY GROWTH: The Indian automobile industry has a significant labour cost advantage. India's automotive sector has the world's second largest pool of skilled labou

Storage & quality of co2 gas, STORAGE & QUALITY OF CO 2 GAS CO 2 gas ...

STORAGE & QUALITY OF CO 2 GAS CO 2 gas is supplied in cylinders at a  high pressure (140 kg / cm 2 ). When the cylinder is full, nearly 90 % of the volume is filled with CO 2

Show the procedure of compute flange stresses, Q. Show the Procedure of Com...

Q. Show the Procedure of Compute flange stresses? Compute flange stresses and the actual bolt stress using: - COLT values for gasket seating stress, ‘y' and the gasket facto

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