Oil of density 800kgm-3 rests on the surface of water. A cube block of side 50mm floats by a distance of 37.5mm in the fresh water as shown in the figure.
![cube floating in fresh water](https://www.easyelimu.com/images/form_4_past_papers/Term_3_2021/Mocks_/physics/cube_floating_in_fresh_water.JPG)
Determine.
- the upthrust on the block due to water.
- the upthrust on the block due to oil.
- the weight of the block.
- the density of the cube block.