Buoyancy

The relative density of mercury is $13.6$. What does it mean?

What is the cause of buoyant force?

Name the force which makes heavy objects appear light when immersed in a liquid.

By a suitable mathematical expression, show that the buoyant force acting on a body placed in a liquid is equal to the weight of the liquid displaced by the body.

Explain the concept of floatation of bodies.

An object of volume $V$ is immersed in a liquid of density $\rho$. Calculate the magnitude of buoyant force acting on the object due to liquid.

Why do objects float or sink, when placed on the surface of liquids?

What is buoyant force? Describe an experiment to demonstrate the existence of this force.

How is floatation related to the density of the solid and that of the liquid?

A body of mass $2 \mathrm{kg}$ and density $8000 \mathrm{kg}/{\mathrm{m}}^3$ is completely dipped in a liquid of density $800 \mathrm{kg}/{\mathrm{m}}^3$. Find the force of buoyancy on it.

A metallic sphere of radius $2 \mathrm{cm}$ is completely dipped in water. Find the force of buoyancy. (Take $g = 10 \mathrm{m}/{\mathrm{s}}^2$).

A body of mass $2 \mathrm{kg}$ floats in a liquid. What is the buoyant force on the body?

A body of volume $50 {\mathrm{cm}}^3$ is completely immersed in water. What is the buoyant force on the body?

Why is a bucket of water lighter when in water than when it is taken out of water?

Why does a balloon filled with hydrogen gas rise up in air, whereas a balloon filled with air does not?

When a piece of cork is held below the surface of water and then released, the cork immediately rises to the surface. What does this observation show?

Why do you feel lighter when you swim?

What is the relationship between the buoyant force on an object and the liquid displaced by it?

What is the S.I unit of Buoyant force?

Why does ice float on water?