Inertia – Definition, Laws of inertia, Types, Examples, FAQs

December 6, 2024 by Neeraj Anand, Param Anand

What Is the Law of Inertia?

Law of inertia, also known as Newton’s first law of motion, states that

An object will continue to be in the state of rest or in a state of motion unless an external force acts on it.

Types of Inertia

Following are the three types of inertia:

Inertia of Rest	Inertia of Direction	Inertia of Motion
When the resistance is offered by the body to continue in the state of rest unless an external force acts on it.	When the resistance is offered by the body to continue the motion in the same direction unless an external force acts on it.	When the resistance is offered by the body to continue to be in the uniform motion unless an external force acts on it.

Law of Inertia Examples

Sudden start of the lift.
The tendency of moving back when the stationary bus starts to move.
Jerk experienced when the lift operates suddenly.
Moving forward when a sudden break is applied.

Frequently Asked Questions – FAQs

Q1

State the law of inertia

According to the law of inertia, An object will continue to be in the state of rest or in a state of motion unless an external force acts on it.

Q2

What is the law of inertia also known as?

Law of inertia is also known as Newton’s first law of motion.

Q3

What are the types of inertia?

Following are the types of inertia:

Inertia of Rest
Inertia of Direction
Inertia of Motion

Q4

The resistance is offered by the body to continue to be in the uniform motion unless an external force acts on it is known as?

Q5

Give two examples to prove the law of inertia.

The tendency of moving back when the stationary bus starts to move.
Moving forward when a sudden brake is applied.

Neeraj Anand, Param Anand

Er. Neeraj K.Anand is a freelance mentor and writer who specializes in Engineering & Science subjects. Neeraj Anand received a B.Tech degree in Electronics and Communication Engineering from N.I.T Warangal & M.Tech Post Graduation from IETE, New Delhi. He has over 30 years of teaching experience and serves as the Head of Department of ANAND CLASSES. He concentrated all his energy and experiences in academics and subsequently grew up as one of the best mentors in the country for students aspiring for success in competitive examinations. In parallel, he started a Technical Publication "ANAND TECHNICAL PUBLISHERS" in 2002 and Educational Newspaper "NATIONAL EDUCATION NEWS" in 2014 at Jalandhar. Now he is a Director of leading publication "ANAND TECHNICAL PUBLISHERS", "ANAND CLASSES" and "NATIONAL EDUCATION NEWS". He has published more than hundred books in the field of Physics, Mathematics, Computers and Information Technology. Besides this he has written many books to help students prepare for IIT-JEE and AIPMT entrance exams. He is an executive member of the IEEE (Institute of Electrical & Electronics Engineers. USA) and honorary member of many Indian scientific societies such as Institution of Electronics & Telecommunication Engineers, Aeronautical Society of India, Bioinformatics Institute of India, Institution of Engineers. He has got award from American Biographical Institute Board of International Research in the year 2005.

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