What is friction?, Physics

Assignment Help:

What is Friction?

When we think about friction, there is one more place for energy to go - heat. When you push a book across a table, does the energy of the book change? Not if in the end, it is sitting still at the same height. Where did the energy from the work you did pushing the book across the table go? Into fighting friction, which does work but does not change the total energy of the book. It does no useful work. The energy used fighting friction goes into heat generated where the objects touch, the surface of the book and the surface of the table. Friction always uses up energy, because it always works against motion.


Related Discussions:- What is friction?

Define sound waves, The energy to which the human ears are sensitive is nam...

The energy to which the human ears are sensitive is named as sound. In general all parts of waves are produced in an elastic material phase, Irrespective of while these are listen

2-point source interference patterns, 2-Point Source Interference Patterns ...

2-Point Source Interference Patterns The diagram below displays various two-point source interference patterns. The crests of each wave are denoted through a thick line althoug

Explain the meaning of nuclear fusion, Explain the meaning of Nuclear Fusio...

Explain the meaning of Nuclear Fusion Fusion happens when two light atoms like hydrogen or lithium combine. There is a net loss of mass which is converted to energy. The most f

Describe how dewar flasks limit energy transfer, Describe how Dewar flasks ...

Describe how Dewar flasks limit energy transfer A Dewar flask (thermos)  is a device that resists energy transfer. Explain how Dewar flasks limit energy transfer by listing the

Light coupling, Light coupling: Another way to look at light guiding in...

Light coupling: Another way to look at light guiding in a fibre is to measure the fibre's acceptance angle. This angle is the angle within which the light should enter the fib

Engineering materials and engineering materials properties, Engineers and t...

Engineers and technologist engage themselves in the design and manufacturing of machine like latches, engines, motors, generators, bulldozers etc. And in the fabrication of vehicle

Atoms And Nuclei, Prove that the various stationary orbit are not equally s...

Prove that the various stationary orbit are not equally spaced?

Kinematics.., As we''re on an inclined plane shouldn''t we take the x & y c...

As we''re on an inclined plane shouldn''t we take the x & y components of gravity into consideration?? thanks

Making a shadow stick, Making a shadow stick In an open space on the sc...

Making a shadow stick In an open space on the school ground drive a 130 cm stick into the ground and let the children stay a record of the length of the shadow, calculated two

Define gas in harmonic well, Define Gas in Harmonic Well? A classical ...

Define Gas in Harmonic Well? A classical system of N distinguishable no interacting particles of mass m is placed in a three-dimensional harmonic well: a) Discover t

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