A rigid, sealed cylindrical marker is held fully immersed in a liquid with its axis vertical. The marker is initially stationary.
| Quantity | Value |
|---|---|
| mass of marker | 5.4 kg |
| area of each horizontal end | 180 cm2 |
| total pressure on the upper end | 148.0 kPa |
| total pressure on the lower end | 151.5 kPa |
| gravitational field strength | 10 N/kg |
The marker is released.
Calculate the initial resultant vertical force on the marker.
Give both the magnitude and the direction of the force.
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.