2006-08-01 13:44:49 · 10 answers · asked by sean 2 in Social Science ➔ Other - Social Science
Friction comes in types -- the main two are 'static' and 'dynamic'. Friction is an extremely important force - in propelling automobiles, screwing in nuts and nails and other ground transport and holding nails, screws and nuts, along with many other uses.
Basically, any situation where you want something to stay, and not move -- will require friction between objects. (A brake on a bicycle, stacking dishes in the kitchen, ect.)
Also -- friction is known to cause heat, but I'm not an encyclopedia, so here's an article to help you out.
http://en.wikipedia.org/wiki/Friction
Best of luck, querida! =)
2006-08-01 13:47:14 · answer #1 · answered by Hatake Seraph 3 · 1⤊ 0⤋
According to the law of conservation of energy, no energy is lost due to friction. Energy is transformed from other forms into heat. A sliding hockey puck comes to rest due to friction as its kinetic energy changes into heat. Since heat quickly dissipates many early philosophers, including Aristotle, wrongly concluded that moving objects lose energy without a driving force.
When an object is pushed along a surface, the energy converted to heat is given by:
E = N \mu_k d \,
where
N is the magnitude of the normal force,
μk is the coefficient of kinetic friction,
d is the distance travelled by the object while in contact with the surface.
Physical deformation is associated with friction. While this can be beneficial, as in polishing, it is often a problem, as the materials are worn away, and may no longer hold the specified tolerances.
The work done by friction can translate into deformation and heat that in the long run may affect the surface's specification and the coefficient of friction itself. Friction can in some cases cause solid materials to melt.
2006-08-01 20:49:05 · answer #2 · answered by Spock 6 · 0⤊ 0⤋
Heat
2006-08-01 20:48:00 · answer #3 · answered by parshooter 5 · 0⤊ 0⤋
slowing of original speed, temperature increase of the medium
2006-08-01 20:48:27 · answer #4 · answered by Hot Lips 4077 5 · 0⤊ 0⤋
heat (or, my favorite effect, static electricity)
2006-08-01 20:50:08 · answer #5 · answered by libgurl2002 2 · 0⤊ 0⤋
produces heat and restance
2006-08-01 20:49:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋
it produces heat.
2006-08-01 20:47:50 · answer #7 · answered by Anonymous · 0⤊ 0⤋
heatr and it also reduces speed
2006-08-01 20:49:00 · answer #8 · answered by marcos m 2 · 0⤊ 0⤋
it slows things...
2006-08-01 20:49:52 · answer #9 · answered by yabadabadoink 2 · 0⤊ 0⤋
on what?
2006-08-01 20:48:10 · answer #10 · answered by WC 7 · 0⤊ 0⤋