A flat pressure sensor is fully immersed in a stationary liquid. Viewed from the side, the sensing surface is initially vertical and the liquid acts on its left-hand face. The sensor is then rotated so that its upper edge moves to the right and the sensing surface is at 30° to the vertical. The liquid remains in contact with the same face.
Explain the direction of the force exerted by the liquid on the sensing surface before the sensor is rotated. Predict the direction of this force after the sensor is rotated and justify your prediction.
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.