A rigid object is held fully immersed in water. It is lowered to a greater depth without touching the container. The water density remains constant. Which statement describes the changes?
The forces on the top and bottom increase, but the upthrust stays constant.
The forces on the top and bottom increase, and the upthrust also increases.
The forces on the top and bottom stay constant, but the upthrust increases.
The forces on the top and bottom stay constant, and the upthrust stays constant.
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.