Friction - Revision history

Jmdonev: 1 revision imported

2021-09-27T00:03:05Z

1 revision imported

← Older revision	Revision as of 00:03, 27 September 2021
(No difference)

energy>Ethan.boechler at 19:29, 10 September 2021

2021-09-10T19:29:49Z

← Older revision		Revision as of 19:29, 10 September 2021
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	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2016~~-04-30]]		[[Category:Done 2020-05-30]]
	<onlyinclude>Friction is an [[everyday force]] that ~~arises from~~ two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.		[[Category:Translated to French]]
			[[fr:Frottement]]
			[[File:Friction brake.jpeg\|framed\|Figure 1. The thermal energy generated during friction braking can be seen in this friction brake/rotor set-up during stress testing.<ref>This image is from http://www.ematg.org.uk/new-pics-01/hot-brake-disc-disc2 accessed August 15th, 2017.</ref>]]
			<onlyinclude>Friction is an [[everyday force]] that is created by two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.

	Friction is why:		Friction is why:
	* [[brake]] rotors get hot when stopping or slowing down,		* [[brake]] rotors get hot when stopping or slowing down,
	* rubbing pieces of wood together can start a fire (see [http://www.instructables.com/id/7-Methods-of-Primitive-Fire-Starting/ 7 methods of primitive fire starting]),		* rubbing pieces of wood together can start a fire (see [http://www.instructables.com/id/7-Methods-of-Primitive-Fire-Starting/ 7 methods of primitive fire starting]),
	* rubbing hands together to make them warm.		* rubbing hands together make them warm.

	Friction in [[engine]]s and [[simple machine\|machine]]s contributes to ~~losses of useful~~ [[energy]], which ~~also~~ wears out the parts in a car (hence the need for [[lubricating oil]])~~. This means that friction is taking the large (macroscopic) motion of an object and turning it into the small (microscopic) motion of atoms and molecules~~. Friction is a [[non-conservative force]] meaning ~~the~~ [[energy]] ~~becomes less~~ useful (but doesn't disappear from the universe, see [[conservation of energy]]).		Friction in [[engine]]s and [[simple machine\|machine]]s contributes to [[energy]] loss, which is what wears out the parts in a car (hence the need for [[lubricating oil]]). Friction is a [[non-conservative force]], meaning [[energy]] is transferred to new forms not useful to the system (but doesn't disappear from the universe, see [[conservation of energy]]).

	There are three types of friction:		There are three types of friction:
	# [~~https~~://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#sta Static friction], when surfaces ~~don't~~ move with respect to each other, like shoes on a floor while walking, or tires on the road while driving.		# [http://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#sta Static friction], when surfaces do not move with respect to each other, like shoes on a floor while walking, or tires on the road while driving.
	# [~~https~~://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#kin Kinetic friction], when surfaces move with respect to each other like shoes on a banana peel, or skidding tires on a road.		# [http://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#kin Kinetic friction], when surfaces move with respect to each other like shoes on a banana peel, or skidding tires on a road.
	# Rolling friction, which is also known as [[rolling resistance]].		# Rolling friction, which is also known as [[rolling resistance]].

	For a more complete description of physics please consult [http://hyperphysics.phy-astr.gsu.edu/hbase/fricon.html hyperphysics].		For a more complete description of physics please consult [http://hyperphysics.phy-astr.gsu.edu/hbase/fricon.html hyperphysics].

	==Phet Simulation==		==Phet Simulation==
	The [~~https~~://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores ~~how friction makes~~ macroscopic [[kinetic energy]] ~~becomes microscopic kinetic energy~~:		The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores the relationship between macroscopic motion, frictional forces, microscopic [[kinetic energy]] and temperature:

	<html>		<html>
	<iframe src="https://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>		<iframe src="https://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>
	</html>		</html>

			==For Further Reading==
			* [[Heat]]
			* [[Thermal energy]]
			* [[Temperature]]
			* [[Atom]]
			* Or explore a [[Special:Random\|random page]]

	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported

2018-09-03T22:23:29Z

1 revision imported

← Older revision	Revision as of 22:23, 3 September 2018
(No difference)

Jmdonev at 02:47, 21 July 2018

2018-07-21T02:47:12Z

← Older revision		Revision as of 02:47, 21 July 2018
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	<html>		<html>
	<iframe src="~~http~~://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>		<iframe src="https://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>
	</html>		</html>
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev at 02:46, 21 July 2018

2018-07-21T02:46:00Z

← Older revision		Revision as of 02:46, 21 July 2018
Line 1:		Line 1:
	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2018~~-08-03]]		[[Category:Done 2016-04-30]]
	<onlyinclude>Friction is an [[everyday force]] that arises from two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.		<onlyinclude>Friction is an [[everyday force]] that arises from two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.

Line 11:		Line 11:

	There are three types of friction:		There are three types of friction:
	# [~~http~~://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#sta Static friction], when surfaces don't move with respect to each other, like shoes on a floor while walking, or tires on the road while driving.		# [https://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#sta Static friction], when surfaces don't move with respect to each other, like shoes on a floor while walking, or tires on the road while driving.
	# [~~http~~://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#kin Kinetic friction], when surfaces move with respect to each other like shoes on a banana peel, or skidding tires on a road.		# [https://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#kin Kinetic friction], when surfaces move with respect to each other like shoes on a banana peel, or skidding tires on a road.
	# Rolling friction, which is also known as [[rolling resistance]].		# Rolling friction, which is also known as [[rolling resistance]].

	For a more complete description of physics please consult [http://hyperphysics.phy-astr.gsu.edu/hbase/fricon.html hyperphysics].		For a more complete description of physics please consult [http://hyperphysics.phy-astr.gsu.edu/hbase/fricon.html hyperphysics].
	==Phet Simulation==		==Phet Simulation==
	The [~~http~~://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores how friction makes macroscopic [[kinetic energy]] becomes microscopic kinetic energy:		The [https://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores how friction makes macroscopic [[kinetic energy]] becomes microscopic kinetic energy:

	<html>		<html>
	<iframe src="~~https~~://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>		<iframe src="http://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>
	</html>		</html>
	[[Category:Uploaded]]		[[Category:Uploaded]]

energy>Jmdonev at 02:16, 21 July 2018

2018-07-21T02:16:24Z

← Older revision		Revision as of 02:16, 21 July 2018
Line 1:		Line 1:
	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2016~~-04-30]]		[[Category:Done 2018-08-03]]
	<onlyinclude>Friction is an [[everyday force]] that arises from two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.		<onlyinclude>Friction is an [[everyday force]] that arises from two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.

Line 20:		Line 20:

	<html>		<html>
	<iframe src="~~http~~://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>		<iframe src="https://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>
	</html>		</html>
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported: From the summer

2016-09-17T22:29:22Z

1 revision imported: From the summer

← Older revision	Revision as of 22:29, 17 September 2016
(No difference)

Jmdonev at 01:50, 13 June 2016

2016-06-13T01:50:12Z

← Older revision		Revision as of 01:50, 13 June 2016
Line 1:		Line 1:
	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2015~~-07-24]]		[[Category:Done 2016-04-30]]
	<onlyinclude>Friction is an [[everyday force]] that arises from two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.		<onlyinclude>Friction is an [[everyday force]] that arises from two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.

J.williams: 1 revision imported

2015-08-26T21:31:06Z

1 revision imported

← Older revision	Revision as of 21:31, 26 August 2015
(No difference)

J.williams at 16:54, 12 August 2015

2015-08-12T16:54:28Z

New page

[[Category:Phets]]
[[Category:Done 2015-07-24]]
<onlyinclude>Friction is an [[everyday force]] that arises from two surfaces interacting.</onlyinclude> When these surfaces slide against each other, this interaction increases the [[thermal energy]] of the two surfaces (the [[temperature]] goes up). While it is easy to think of friction as a 'bad' thing, friction is needed in order to drive (it's what pushes the wheels on our car forward and allows us to stop and turn), or even walk.

Friction is why:
* [[brake]] rotors get hot when stopping or slowing down,
* rubbing pieces of wood together can start a fire (see [http://www.instructables.com/id/7-Methods-of-Primitive-Fire-Starting/ 7 methods of primitive fire starting]),
* rubbing hands together to make them warm.

Friction in [[engine]]s and [[simple machine|machine]]s contributes to losses of useful [[energy]], which also wears out the parts in a car (hence the need for [[lubricating oil]]). This means that friction is taking the large (macroscopic) motion of an object and turning it into the small (microscopic) motion of atoms and molecules. Friction is a [[non-conservative force]] meaning the [[energy]] becomes less useful (but doesn't disappear from the universe, see [[conservation of energy]]).

There are three types of friction:
# [http://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#sta Static friction], when surfaces don't move with respect to each other, like shoes on a floor while walking, or tires on the road while driving.
# [http://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html#kin Kinetic friction], when surfaces move with respect to each other like shoes on a banana peel, or skidding tires on a road.
# Rolling friction, which is also known as [[rolling resistance]].

For a more complete description of physics please consult [http://hyperphysics.phy-astr.gsu.edu/hbase/fricon.html hyperphysics].
==Phet Simulation==
The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores how friction makes macroscopic [[kinetic energy]] becomes microscopic kinetic energy:

<html>
<iframe src="http://phet.colorado.edu/sims/html/friction/latest/friction_en.html" width="800" height="600"></iframe>
</html>
[[Category:Uploaded]]