An aircraft window has an area of 0.030 m2. The pressure inside the cabin is 82 000 Pa82\,000\ \mathrm{Pa}82000 Pa. The pressures on both faces are uniform and produce a resultant force of 1800 N from the cabin towards the outside.
What is the atmospheric pressure outside the aircraft?
22 000 Pa22\,000\ \mathrm{Pa}22000 Pa
60 000 Pa60\,000\ \mathrm{Pa}60000 Pa
81 946 Pa81\,946\ \mathrm{Pa}81946 Pa
142 000 Pa142\,000\ \mathrm{Pa}142000 Pa
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.