Question

What is Galileos law of inertia.? Explain it with suitable example.

The answer must be long and for 5 marks​

Answer 1

Galileo's law of inertia - law

Galileo, first of all, said that that object moves with constant speed when no forces act on them. This means that if an object is moving on a frictionless path and no other force is acting upon it, then the object would be moving at that constant speed forever.

Answer 2

Answer:

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Explanation:

There are three types of inertia:

1. Inertia of rest: The ability of a body to resist any change in its state of rest. i.e. body at rest.

2. Inertia of motion: The ability of a body to resist any change in its state of motion. i.e. moving body with uniform speed.

3. Inertia of rotation: The ability of a body to resist any change in its state of rotation.i.e. rotating body with uniform speed.

INERTIA AND MASS - DEFINITION

The inability of a body to change its state of rest or of uniform motion by itself is called inertia.

Inertia of a body depends mainly upon its mass. If we kick a football, it flies away.But if we kick a stone of the same size with equal force, it hardly moves. Instead, we may injury our foot.

A force, that is just enough to cause a small carriage to pick up a large velocity, will produce a negligible change in the motion of a train. We say that the train has more inertia than the carriage.

Clearly, more massive objects offer larger inertia. The inertia of an object is measured by its mass.

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GALILEO'S LAW OF INERTIA - LAW

Before Galileo developed the concept of Inertia, people believed that a push was necessary to keep something moving.

Galileo, first of all, said that that object moves with constant speed when no forces act on them.

This means that if an object is moving on a frictionless path and no other force is acting upon it, then the object would be moving at that constant speed forever.

But practically it is impossible for any object to attain the condition of zero unbalanced force, as forces like Force of friction, Force of air and many other forces are always acting upon the object.

Later on, Sir Isaac Newton built on Galileo's concept of Inertia to include all objects, giving formation to Newton's First Law of Motion.

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