A sealed underwater camera housing is held completely beneath the surface of fresh water. It displaces 0.0060 m3 of water. The density of the water is 1000 kg/m3 and g=10 N/kgg=10\ \mathrm{N/kg}g=10 N/kg. When the housing is released, the initial resultant force on it is 6 N upwards.
What is the total weight of the camera housing?
54 N54\ \mathrm{N}54 N
6 N6\ \mathrm{N}6 N
66 N66\ \mathrm{N}66 N
60 N60\ \mathrm{N}60 N
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.