Question

write the condition that take place when a solid is immersed in a fluid

Answer 1

When an object is immersed, its base will be acted upon by the upward pressure of fluid. If the object is completely immersed, its upper half will also experience a pressure in the downward direction. The pressure pushing the object downwards will be lesser than the pressure upwards because of the difference in depth

Hence, the net buoyancy is experienced in the upwards direction.

The object floats (in partial or complete submersion) if the buoyant force is equal to the weight of the object that was dragging it down.

Answer 2

first if the solid density is less than water than it will float on it
2nd if its density is more than water than it will sink in water
3rd if its density is equal to water it will sink but not full it will float without being out of the water such as ice floats on water