# Class 11 Physics Chapter 5 NCERT Solutions (Updated for 2021-22)

NCERT Solutions for Class 11 Physics Chapter 5: NCERT Solutions for the fifth chapter in Physics, Laws of Motion, for CBSE class 11, cover the latest syllabus under the central board of secondary education. They not only offer valuable insights about the chapter but also let students know how they should be writing answers. Besides this, the solutions also consist of those questions that have appeared in the examinations in the past. So, by going over NCERT solutions, students can become thorough with various concepts in the chapter, ‘Laws of Motion.’

## NCERT Solutions for Class 11 Physics Chapter 5 Laws of Motion

Class 11 Physics NCERT Solutions for chapter 5

NCERT Solutions for chapter 5 for CBSE class 11 are available for download as PDF. So, students can get them from various websites. When it comes to ‘Laws of Motion,’ NCERT has also given 40 questions along with their solutions. The questions serve as a way for students to understand the concepts. They should also help them to score in the examinations.

### Download Class 11 Physics NCERT Solutions for Chapter 5 Free PDF

You can download CBSE NCERT Solutions for Class 11 Physics Chapter 5 Laws of Motion from below.

## What will you learn in CBSE Class 11 Physics Chapter 5 Laws of Motion?

The chapter has a total of 11 sections. Each part describes a concept related to the laws of motion. While the first section is mostly a recap of the earlier chapter along with other topics such as rest and motion, the second part is all about Aristotle’s Fallacy. Aristotle’s Fallacy or Law of Motion is one of the essential rules governing the movement of objects and states that ‘an external force is required to keep a body in motion.’

The sections that follow talk about Newton’s Laws of Motion. Each of the three laws comes in three parts. Similarly, part seven tells you about the conservation of momentum, while part eight is about how different particles stay in a state of equilibrium.

The last three sections are about mechanics. They explain the most common forces in mechanics that help you to solve various problems. Additionally, they also talk about circular motion and the laws that govern it.

The chapter, ‘Laws of Motion’ has hundreds of formulae which come in handy when solving problems related to motion. Each concept in the chapter has a formula associated with it, that helps determine the force that an object in motion carries with it. You can find below, few such formulae, that will help you to solve the problems that come at the end of the chapter.

## Subtopics of Class 11 Physics Chapter 5 Laws of Motion

 Section Number Topic 5.1 Introduction 5.2 Aristotle’s fallacy 5.3 The law of inertia 5.4 Newton’s first law of motion 5.5 Newton’s second law of motion 5.6 Newton’s third law of motion 5.7 Conservation of momentum 5.8 Equilibrium of a particle 5.9 Common forces in mechanics 5.10 Circular motion 5.11 Solving problems in mechanics

## NCERT Solutions for Class 11 Physics Chapter 5 | Important Theorems and Formulae

The chapter, ‘Laws of Motion,’ makes use of several formulae. In the following section, we have you a set of formulae that are important for the examination.

The first formula we have is for Momentum.

If ‘v’ is the velocity of a moving object and, ‘m’ is its mass, then its momentum, ‘p’ is:

P = mv

Thus, we infer that the momentum of an object in motion is the product of its mass and velocity. Also, you can derive the formula for momentum using Newton’s First Law of Motion.

Similarly, you can also determine the force of a moving object, denoted by ‘F.’ Newton’s second law of motion states that the force that a moving object has is directly proportional to the rate of change of momentum.

So, we have,

F = k dp/dt

Where,

‘F’ is the force of the moving object.

‘dp’ is its momentum

And ‘dt’ is the time.

Likewise, you also have a formula related to Newton’s Third Law of Motion.

So, chapter 5 for Physics for class 11 under the CBSE syllabus is all about the laws of motion. It also tells you about the scientists who contributed to formulating these rules. NCERT solutions give not only an overview of the laws of motion but also helps students to practice for their exams by providing them with problems to solve.

We have covered the complete guide on CBSE NCERT Solutions for Class 11 Physics Chapter 5 Laws of Motion. Feel free to ask us any questions in the comment section below.

### Why should I use the NCERT Solutions for Physics Chapter 5 Laws of Motion for Class 11?

1. The NCERT Solutions are generated using the CBSE blueprint’s chapter-by-chapter mark distribution.
2. In-depth solutions allow students to grasp subjects more quickly.
3. For the numerical in this chapter, step-by-step explanations are provided.
4. Students’ confidence is boosted by the use of simple and logical language.
5. Wherever possible, students are given visual representations to help them absorb subjects more quickly.

### What concepts are covered in NCERT Solutions for Class 11 Physics Chapter 5?

Go through the above article for the list of concepts covered in NCERT Solutions for Class 11 Physics Chapter 5.

### Use a monohybrid cross to explain the topic of Law of Inertia, which is presented in Chapter 5 of NCERT Solutions for Class 11 Physics.

The law of inertia, often known as Newton’s first law of motion, holds that unless an external force acts on an item, it will remain at rest or in motion.

### Where can I download NCERT Solutions for Class 11 Physics Chapter 5 free PDF?

You can download NCERT Solutions for Class 11 Physics Chapter 5 free PDF from the above article.