A series of free GCSE/IGCSE Physics Notes and Lessons.
The following diagram gives the formula for pressure: pressure = force ÷ area.
Pressure in Fluids
How to calculate the pressure of fluid acting at a surface?
Explain why atmospheric pressure decreases with an increase in height.
A gas inside a container applies a force of 400 000N. THe walls of the container have an area of 8 m2
. Calculate the pressure of the gas.
Floating or Sinking
How to calculate the pressure of a liquid?
How the pressure of a liquid leads to the force of upthrust?
Explain why objects float or sink.
Describe the factors which influence floating and sinking.
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