Difference between revisions of "Equilibrium Forces"
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==Key Stage 3== | ==Key Stage 3== | ||
| + | ===Meaning=== | ||
| + | '''Equilibrium forces''' are a pair of equal [[force]]s acting on opposite sides of an [[object]] in opposite directions. | ||
| + | |||
| + | ===About Equilibrium Forces=== | ||
| + | : '''Equilibrium forces''' can act to stretch or squash an [[object]]. | ||
| + | : When an [[object]] is acted on by two equal, but opposing [[force]]s, the object is in '''equilibrium'''. | ||
| + | : [[Elastic]] [[object]]s like [[Coil Spring|springs]] need two opposing [[force]]s to change length. Once the [[force]]s have been applied the [[Coil Spring|spring]] will stay at this new length until the [[force]]s are removed. | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:SpringForcesEquilibrium.png|center|300px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |The spring will stretch to a certain length and then stay the same due to two opposing [[force]]s. | ||
| + | |} | ||
| + | : If one [[force]] were bigger than the other the [[elastic]] [[object]] would [[accelerate]] rather than stretch. This is what happens when a rubber band is flicked. It begins in '''force equilibrium''' stretched by two fingers pulling in opposite directions. When one finger is removed there are no longer two opposing [[force]]s so the rubber band [[accelerate]]s. | ||
| + | |||
| + | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
'''Equilibrium forces''' are a pair of equal [[magnitude]] [[force]]s acting on opposite sides of an [[object]] in opposite directions. | '''Equilibrium forces''' are a pair of equal [[magnitude]] [[force]]s acting on opposite sides of an [[object]] in opposite directions. | ||
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===About Equilibrium Forces=== | ===About Equilibrium Forces=== | ||
: '''Equilibrium forces''' can act to stretch or squash an [[object]]. | : '''Equilibrium forces''' can act to stretch or squash an [[object]]. | ||
| − | : When | + | : When one [[object]] is acted on by two [[force]]s which are equal in [[magnitude]] but opposite in direction the object is in '''equilibrium'''. |
: [[Elastic]] [[object]]s like [[Coil Spring|springs]] need two opposing [[force]]s to change length. Once the [[force]]s have been applied the [[Coil Spring|spring]] will stay at this new length until the [[force]]s are removed. | : [[Elastic]] [[object]]s like [[Coil Spring|springs]] need two opposing [[force]]s to change length. Once the [[force]]s have been applied the [[Coil Spring|spring]] will stay at this new length until the [[force]]s are removed. | ||
| + | : [[Plastic Deformation|Plastic]] [[object]]s also need two opposing [[force]]s to change length. However, while the [[force]] is applied the [[object]] will continue to stretch until the [[force]]s are removed. At that point the [[Plastic Deformation|plastic]] [[object]] will remain at this new length. | ||
{| class="wikitable" | {| class="wikitable" | ||
Latest revision as of 12:36, 11 February 2019
Contents
Key Stage 3
Meaning
Equilibrium forces are a pair of equal forces acting on opposite sides of an object in opposite directions.
About Equilibrium Forces
- Equilibrium forces can act to stretch or squash an object.
- When an object is acted on by two equal, but opposing forces, the object is in equilibrium.
- Elastic objects like springs need two opposing forces to change length. Once the forces have been applied the spring will stay at this new length until the forces are removed.
 |
| The spring will stretch to a certain length and then stay the same due to two opposing forces. |
- If one force were bigger than the other the elastic object would accelerate rather than stretch. This is what happens when a rubber band is flicked. It begins in force equilibrium stretched by two fingers pulling in opposite directions. When one finger is removed there are no longer two opposing forces so the rubber band accelerates.
Key Stage 4
Meaning
Equilibrium forces are a pair of equal magnitude forces acting on opposite sides of an object in opposite directions.
About Equilibrium Forces
- Equilibrium forces can act to stretch or squash an object.
- When one object is acted on by two forces which are equal in magnitude but opposite in direction the object is in equilibrium.
- Elastic objects like springs need two opposing forces to change length. Once the forces have been applied the spring will stay at this new length until the forces are removed.
- Plastic objects also need two opposing forces to change length. However, while the force is applied the object will continue to stretch until the forces are removed. At that point the plastic object will remain at this new length.
|
| The spring will stretch to a certain length and then stay the same due to two opposing forces. |
- If one force were bigger than the other the elastic object would accelerate rather than stretch. This is what happens when a rubber band is flicked. It begins in force equilibrium stretched by two fingers pulling in opposite directions. When one finger is removed there are no longer two opposing forces so the rubber band accelerates.