Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the Friction
Friction is a force that works against all motion. It slows everything down and it is the reason that the motion we are most familiar with always seems to slow down and stop. It occurs any time two surfaces move against each other.
On a cold morning you might rub the palms of your hands together and use the heat created by the friction of your hands' rubbing to make your hands feel warmer. The brakes in a car use the force of friction to bring your car to a stop.
In your experience, do some situations have more friction than others? What does it depend on? Let's compare two situations - sliding a heavy box of books on a tile floor or on a carpet. In which situation would you need less force to move the box? On the tile, of course. Why? Because a smooth surface such as tile offers less friction when sliding a box than a rough surface like carpet. Can you think of a surface that would offer even more friction to sliding? How about blacktop or asphalt? So the amount of friction depends on how rough or smooth the surface is.
What else does the force of friction depend on? What if you are sliding an empty box or the same box loaded with books, which is easier? The empty box, of course. Less weight pushing down on the surface means you have to use less force to overcome friction. This leads to one way frictional forces can be represented as:
Ff = μN
where Ff is the frictional force in Newtons, μ is the coefficient of friction (pure number) and can range from .01 to .99 with larger values for rougher surfaces and N is the normal force in Newtons, the force that the surface holding the box pushes up against the box. The frictional force is always in the direction opposite to any motion.
what is elastic fatigue
A luminous point object is placed at a depth of 0.5m inside a liquid. A circular patch of light of radius 0.05675 m is prepared on the surface. Determine the critical angle and re
99 ml of H 2 O is initially at room temperature (20.0 o C). A chilled steel rod at 2.0 o C is placed in the water. If the final temperature of the system is 18.7 o C, what is th
Why should the material used for making permanent magnets have high coercivity? What will be the values of input A and B for the Boolean expression? Why is frequency modulati
In the thin lens equation first prove that Zz = f*f (Hint use this diagram along with the characteristics of similar triangles). Then use this equation along with the act that Z^
What is neutral buoyancy? Buoyancy is the net upward force experienced by an object submersed in a fluid. Pascal's principle dictates that fluid pressure on an object enhances
The topic for the project is to study and do calculation in Rotating Biological Contactor although you may choose a different title for your report. The aim is to research how the
working and construction of fabry perot interferometer
Schroedinger's cat (E. Schroedinger; 1935): A thought experiment designed to revel the counterintuitive & strange notions of reality that come along quantum mechanics. A ca
scalar and vecror
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd