Question

explain buoyancy for 3 marks question

Answer 1

The buoyant force comes from the pressure exerted on the object by the fluid. Because the pressure increases as the depth increases, the pressure on the bottom of an object is always larger than the force on the top - hence the net upward force. The buoyant force is present whether the object floats or sinks.

Answer 2

the upward force is also called buoyant force