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→Calculating Upthrust
===Key Stage 4 Higher===
===Calculating Upthrust===
''NB: You don not need to remember this the following equation.''
Pressure = (Density of the fluid) x (Gravitational Field Strength) x (Depth)
<math>h</math> = [[Depth]] of the [[object]] in the [[fluid]].
''NB: You should know the following equation.''
'' '''Upthrust''' = (Difference in pressure between top and bottom) x (Cross sectional area perpendicular to depth)
<math> F_u = \delta Delta P A</math>
Where:
<math> F_u</math> = The [[force]] of [[upthrust]].
<math> \delta Delta P</math> = [[Pressure]] difference between the top and bottom of the [[object]].
<math>A</math> = [[Cross Sectional Area|Cross sectional area]] of the [[object]] [[perpendicular]] to the [[height]].