Question

solid body of mass 10 kg and density 600 kg metre per second is completely immersed in a liquid of density 800 kg metre per cube find the buoyant force acting on it

Answer 1

Here's the answer you are looking for

☛Buoyant force = Upthrust = mass of liquid displaced.

Now, we know,

So,

☛ Mass of liquid displaced = Volume of liquid displaced × density of the liquid

By Archimedes principle, we know that when an object is partially or completely immersed in a liquid then the volume of liquid displaced is equal to the volume of immersed part of the object.

So,

☛ Volume of liquid displaced = Volume of the body

➡️Mass of body = 2kg

and it's density = 8000kg/m³

Thus, mass of water displaced

= volume of liquid displaced × density of liquid

Therefore, the upthrust or buoyant force

➡️ Therefore, the force is 1.96N