Laws of solid friction, Mechanical Engineering

Assignment Help:

Laws of solid friction:

Sol.: The friction which exists between two surfaces that are not lubricated is called as solid friction. The two Surfaces can be at rest or one of the surfaces is moving and other surface is at rest. The following are laws of solid friction.

1. The force of friction acts in opposite direction in which the surface is having tendency to move.

2. The force of friction is equal to force applied to surfaces, so long as surface is at rest.

3. When surface is on point of motion, force of friction is highest and this maximum frictional force is called as limiting friction force.

4. The limiting frictional force bears constant ratio to the normal reaction between the two surfaces.

5. The limiting frictional force does not depend upon shape and areas of surfaces in contact.

6. The ratio between the limiting friction and normal reaction is a bit less when the two surfaces are in motion.

7. The force of friction is independent of velocity of sliding.

The above laws of solid friction are called as laws of static and dynamic friction or law of friction.

 


Related Discussions:- Laws of solid friction

GOVERNOR, APPLICATION OF GOVERNOR

APPLICATION OF GOVERNOR

Access considerations for plant design, Q. Access Considerations for plant ...

Q. Access Considerations for plant design? Plant facilities shall be provided with acceptable access and egress for personnel, materials, and equipment by using access ways, ro

Problems on structural design of combined footings, Problems on Structural ...

Problems on Structural Design of Combined Footings a. Two columns 50 cm x 50 cm in size support service loads of 1200kN and 800kN.The centre to centre spacing between columns

Two wheeler engines, Two Wheeler Engines: Engine is a unit of motorcycle t...

Two Wheeler Engines: Engine is a unit of motorcycle that runs the motorcycle by converting fuel energy to mechanical power. This power comes from the burning of fuel inside the cy

Getting familiar with entrepreneurship development , Getting Familiar: An ...

Getting Familiar: An entrepreneur wishing to set up an industry must first formulate a comprehensive plan for setting the industry for its success. For this, he/she should have co

Authoe, can i ask who the author of this website is?

can i ask who the author of this website is?

control valve, How to design pressure control valve drill plug? How to sel...

How to design pressure control valve drill plug? How to select stroke and hole diameter and quantity?

Resistor-fundamentals of electricity , Resistor: The wire that oppose...

Resistor: The wire that opposes (resists) the flow of current through it by virtue of its property is called resistor. This property is known as resistance. The resistance is

Design loads and load combinations, Q. Design Loads and Load Combinations? ...

Q. Design Loads and Load Combinations? The Designer shall determine the following loads and specify them on the Data Sheet. Design loads are defined and classified as follows:

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