A floating inspection platform is tested with different loads. The table shows the total weight of the platform and its load, and the depth of the platform below the water surface. The platform floats at a constant level in each test.
| Total weight (N) | Depth below water surface (cm) |
|---|---|
| 600 | 3.0 |
| 700 | 3.5 |
| 800 | 4.0 |
Describe the pattern in the table and predict the depth below the water surface when the total weight is 900 N. Explain why the platform floats at this depth.
108 exam-style questions on AQA GCSE Physics 5.5 Pressure and pressure differences in fluids, covering 5.5.1 Pressure in a fluid and 5.5.2 Atmospheric pressure. Each one has a worked solution and a mark scheme showing where the marks go.