A flat sensor plate has an area of 0.0040 m2. It is lowered in an open tank of water from a depth of 1.5 m to a depth of 5.0 m. The other side of the plate is exposed to the atmosphere. The density of water is 1000 kg/m3. Take g=10 N/kgg=10\ \mathrm{N/kg}g=10 N/kg.
Calculate the increase in the resultant force due to pressure on the plate.
132 exam-style questions on Edexcel GCSE Physics 15.2 Pressure in fluids, covering 15.2.1 Atmospheric pressure and height, 15.2.2 Pressure in fluids, 15.2.3 Pressure, force and area, 15.2.4 Pressure and depth, 15.2.5 Pressure in liquids: depth and density, 15.2.6 Upthrust, and 15.2.7 Floating and sinking. Each one has a worked solution and a mark scheme showing where the marks go.