Floating and Sinking
Floating and Sinking: Overview
In this topic, we will study the concept of floating and sinking in brief. We will come across the collection of objects which we have to classify according to their ability to float or sink. Questions are also provided here for revision.
Important Questions on Floating and Sinking
What is the purpose of floating in a turtle float?

How is flotation used in everyday life?

What is an example of flotation?

What is flotation technique?

What is the condition under which an object will float or sink, aka the Archimedes principle?

What is an example of floatation?

What are the laws of floatation ? Explain.

In what condition does a body float ?

Buoyant force exerted by different fluids on a given body is :

Why does a block of plastic released underwater come up to the surface of water?

In what direction does the buoyant force on an object immersed in a liquid act?

You find your mass to be on a weighing machine. Is your mass more or less than ?

Why does a body float or sink when placed on the surface of the water?

Name the force exerted by a fluid in vertically upward direction on a body which is partially immersed in the fluid.
(Choose one of the following: Gravitational force/Buoyant force/Frictional force).

Suppose a cubical block of wood is first immersed in normal water and then in sea water. In which case will you find the wood sinking more?

Give the laws of flotation. Explain diagrammatically.

An object sinks in a fluid if its weight is equal to the buoyant force acting on it.

The range of a lactometer varies from to .

A solid will sink in a liquid of density higher than the solid.

Consider the following information in respect of four objects A, B, C and D:
Object | Density () | Volume () | Mass () |
A | 2 | 4000 | |
B | 8000 | 4 | |
C | 2000 | 1000 | |
D | 4 | 2000 |
Which object would float on water?
