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.
First Law: It shows that the mass (m) of substance deposited at the cathode during electrolysis is directly proportional to the quantity of electricity (total charge q) passed by t
The recombination procedure is represented with returning the electron from the CB where it is free into a hole in the VB where it is in a bond. The excess energy of the electron
Assume a new planet was discovered to orbit the Sun with a period 5 times that of Pluto. Using the data, measure the average distance from the Sun for this new planet.
Inertia with a spade Scoop up a spadeful of dry earth. Now pitch the earth away from you. View that when the spade stops the earth flies on due to inertia.
How to measure deflection in deflection magnetometer
Lambert's laws (J.H. Lambert): Lambert's first law The illuminance on a surface illuminated through light falling onto it perpendicularly from a point source is propor
What is LASER? describe the construction and working of He-Ne Laser with suitable diagram
A train consists of a 4300-kg locomotive pulling two loaded boxcars. The first boxcar has a mass of 12,700 kg and the second has a mass of 16,300 kg. Presume that the boxcar wheels
what is thermal conductivity ?
What are the safety terms to be inspected on wiring? Ans: Safety terms to be checked on wiring are securing of wiring through cleats with trough provision of correct size of
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