Difference between revisions of "Upthrust"

Revision as of 08:49, 15 October 2018

Upthrust is a force that acts upwards in a fluid due to the fluid being displaced.

The force of upthrust is equal to the weight of fluid that has been displaced.

An object in the water experiences as lot of upthrust because water is dense.

Upthrust is weak in the air because the air is not very dense. For most objects in air upthrust can be ignored because it is so small.


A boat floats on the water because the weight is balanced by the upthrust.	A submarine can change the amount of upthrust in order to rise or sink in the water.

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-A [[force]] that acts upwards in a [[fluid]] due to the [[fluid]] being [[Displace|displaced]].
+==Key Stage 3==
+===Meaning===
+[[Upthrust]] is a [[force]] that acts upwards in a [[fluid]] due to the [[fluid]] being [[Displace|displaced]].
+===About Upthrust===
+: The [[force]] of [[upthrust]] is equal to the [[weight]] of [[fluid]] that has been [[Displace|displaced]].
+: An [[object]] in the [[water]] experiences as lot of [[upthrust]] because [[water]] is [[Density|dense]].
+: [[Upthrust]] is weak in the [[air]] because the [[air]] is not very [[Density|dense]]. For most [[object]]s in [[air]] [[upthrust]] can be ignored because it is so small.
+===Examples===
+{| class="wikitable"
+|-
+|[[File:UpthrustBoat.png|center|250px]]
+|[[File:UpthrustSubmarine.png|center|300px]]
+|-
+| style="height:20px; width:300px; text-align:center;" |A boat floats on the water because the [[weight]] is balanced by the [[upthrust]].
+| style="height:20px; width:300px; text-align:center;" |A submarine can change the amount of [[upthrust]] in order to rise or sink in the [[water]].
+|}