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# NCERT Solutions Class 11 Physics Chapter 5 Work, Energy and Power - PDF Download

Class 11

NCERT solutions for Class 11 Physics Chapter 5 Work, Energy and Power is now available for download in PDF format on our website which is totally free. The Class 11 Physics Chapter 5 NCERT solutions are prepared by our subject teacher experts who have many years of experience in the field of physics.

The comprehensive, step-by-step Class 11 Physics Ch 5 NCERT solutions strictly adhere to the your board exam guidelines and hence, act as an extremely reliable resource. Work, Energy and Power Class 11 NCERT PDF also includes detailed explanation to help you understand the complicated problems better.

NCERT solutions for Class 11 Physics Work, Energy and Power PDF mainly focus on complex problems based on the given topics in this chapter. But it takes a smart approach in providing you with in-depth knowledge by incorporating questions that require you to choose the correct alternative.

Work, Energy and Power Class 11 NCERT PDF has proved to play an extremely important role in students preparing for their examinations in a short period by highlighting all essential theories and mathematical problems.

Download the NCERT Physics Class 11 Chapter 5 PDF today through the link given on this page. You can study anywhere and everywhere from your favorite device. Scoring the highest marks and standing out in your class has never been easier.

However you are familiar with the three terms: Work, Energy Power, learning about the relationship between these three is made easy with the help of NCERT Class 11 Physics Work, Energy Power solutions.

The first two subtopics in this chapter explain the scalar product and the notions of work and kinetic energy. Then, the first part of Work, Energy and Power includes the work-energy theorem, conservation of mechanical energy, the concept of kinetic energy, potential energy and much more.
NCERT solutions Class 11th Physics Chapter 5 provides you with step-by-step solutions of Mathematical problems and detailed theoretical representation to help you grasp these concepts better.

NCERT solution of Physics Class 11 Chapter 5 in the next part explains the concept of power and collisions by providing lucid diagrammatic representations.

## Topics Covered in Class 11 Physics Chapter 5 - Work, Energy, and Power

Mentioned below are some of the key concepts discussed in this chapter.

• The work-energy theorem

• Work

• Kinetic energy

• Work done by a variable force

• The work-energy theorem for a variable force

• The concept of potential energy

• The conservation of mechanical energy

• The potential energy of a spring

• Law of conservation of energy

• Power

• Collision

### Introduction

In the first section, you will be introduced to some concepts that are related to Work, Energy, and Power.

#### The Scalar Product

In this part we will learn about the scalar product of two vectors. The scalar product or dot product of any two vectors A and B, denoted as A.B(read A dot B)

is defined as A.B = A B cos θ

After that we will assume that scalar quantities obey distributive law.

#### The Work-Energy Theorem

In this chapter we will learn the work energy theorem and derivation of work energy theorem by Newton's law.

#### Work

In this topic we will learn about work. Here is the definition of work: The work done by the force is defined to be the product of the component of the force in the direction of the displacement and the magnitude of this displacement.

After that we get to about formulas of work and its derivation. After the derivation there are some numerical problems based on work.

#### Kinetic Energy

In this topic we will learn about kinetic energy, formula and its derivation. On the basis of these formulas there are some formulas.

#### Work Done By A Variable Force

In this topic you will learn about work by a variable force. A constant force is rare. It is the variable force, which is more commonly encountered.

#### The Work-Energy Theorem For a Variable Force

In this topic you will get some knowledge of the work energy theorem for variable force.

## Key Features of NCERT Solutions for Class 11 Physics Chapter 5 - Work, Energy and Power

• These NCERT Solutions are prepared in order to help you in quickly finding important concepts from Work, Energy, and Power.

• All concepts are explained in a very detailed manner.

• NCERT Solutions are clear and easy to understand for every student.

• These solutions are prepared by subject experts as per the syllabus curated by experts.

• These NCERT Solutions on Work, Energy, and Power help students in developing strong conceptual foundations for students, which is important in the final stages of preparation for board and any other competitive exams.

## Benefits of NCERT Solutions for Class 11 Physics Chapter 5

NCERT solutions for Class 11 Physics Chapter 5 Work, Energy and Power have been able to help you in many ways.

Following are some of the benefits of NCERT Solutions of Work, Energy and Power Class 11th

• Provides Step-by-Step Solutions: Physics NCERT solutions Class 11 Work, Energy and Power provides step-by-step solutions to complex problems which are essential for your class tests and final examinations. This solution covers the entire exercise given in your book.

• Quality of Answers: Class 11 Physics Chapter 5 NCERT solutions are prepared by our expert teachers abiding by all the instructions given by your examination. All answers are uniquely designed to cover the whole topic, explaining to you all the important concepts along with illustrations when necessary.

• Available for Free: You can access the Work, Energy and Power Class 11 NCERT solutions without paying any charges because it is free of cost on our website.

• Useful for Competitive Exams: The extensive study material Physics NCERT solutions Class 11 Work, Energy and Power is valid and very useful even for other gov. competitive exams.

• Requires Less and Qualitative Time to Prepare: NCERT solutions Physics Class 11 Chapter 5 helps you to grasp the complex topics like power, collisions, potential energy quicker by providing well-structured answers.

Question 1 : What are the topics in chapter 5 class 11th?

Answer : Mentioned below are some of the key concepts discussed in this chapter.

• The work-energy theorem

• Work

• Kinetic energy

• Work done by a variable force

• The work-energy theorem for a variable force

• The concept of potential energy

• The conservation of mechanical energy

• The potential energy of a spring

• Law of conservation of energy

• Power

• Collision

Question 2 : What is work-energy theorem

Answer : The work-energy theorem, also known as the principle of work and kinetic energy, states that the total work done by the sum of all the forces acting on a particle is equal to the change in the kinetic energy of that particle.