A fireproof safe weighs 5600 N and rests on four identical feet. Each foot has a contact area of 0.020 m2. Documents and equipment weighing 2400 N are placed in the safe. The floor can withstand a pressure of up to 80 000 Pa80\,000\ \mathrm{Pa}80000 Pa. Calculate the pressure exerted on the floor by the loaded safe and state whether this is within the limit.
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.