How heat will produce in friction?

Answer 1

Heat is the feel of energy existing in a material due to the vibrational energy of its molecules. Where there is friction it will increase the vibrational energy of the molecules and that will exhibit as increase in temperature.
A part of the work done in the friction will be converted as the vibrational energy of the molecules. Thats why when a metal is heated it melts. The closely packed molecules or atoms need more space to keep its vibrational state. So the average space occupied by the unit increases and hence causes an increase in total volume & decrease in density.

Answer 2

You can get very high temperatures by friction, that depends upon the type of materials are in contact, they will produce heat until achieve their melting points, when that is reached a physical reaction between them initiate to produce burning or alloys.

Answer 3

Friction produces heat.

This is because the particles on the 2 surfaces are being so compressed that they release heat.

Answer 4

Well, if you had thought about it a little more you would have answered your question. Take a coal fire at home, now tell me, what two elements rubbing together cause that heat? That's right, none! Their are many sources of heat, mechanical, friction, electrical, chemical reactions, nuclear reactions, the list goes on...

Answer 5

To put it simply by conservation of energy. Friction reduces mechanical energy (kinetic) and since energy can't be destroyed it has to go somewhere, it has no process for storing energy (potential) so it is converted to heat energy(thermal)