NCERT Solutions for Class 11 Physics Chapter 7

Download the NCERT Solutions for Class 11 Physics Chapter 7 PDF which is easily available on the official website of CoolGyan. For the complete NCERT Solutions, download the pdf and revise Physics Chapter 7 Class 11. Class 11 Physics Chapter 7 NCERT solutions have been arranged by the teachers, who have been proficient in teaching these subject matters for years now. They have a great experience and are experts so that they can explain the questions in a very uncomplicated way.


To clear all your queries if you have some, you can visit the official website and go through the questions, and Class 11 Physics Ch 7 NCERT solutions, This is how you can get in touch with experts or teachers, and clear all of your doubts.

NCERT Solutions For Class 11 Physics Chapter 7 – Free PDF Download

The System of Particles and Rotational Motion Class 11 NCERT solutions are available on the official website of CoolGyan in PDF format. The Ch 7 Physics Class 11 solutions are properly well-drafted, keeping your knowledge and expertise in mind. These NCERT Solutions for Class 11 Physics system of particles and Rotational Motion will help you in scoring good marks in the exams.


Chapter 7 – System of Particles and Rotational Motion

Introduction

In the earlier chapters, you have learnt about the motion of a single particle. (A particle is ideally represented as a point mass having no size.) The previous chapter focuses on how the motion of such bodies can be described in terms of the motion of a particle. Any real body encountered in daily life has a finite size. There’s always a question on how to deal with the motion of extended bodies (bodies of finite size). It often is that the idealised model of a particle is inadequate.


In this chapter, you will learn beyond this inadequacy. How to build an understanding of the motion of extended bodies? The ended body, in the first place, is a system of particles. The NCERT Solutions for Class 11 Physics Chapter 7 pdf download begins with the consideration of the motion of the system as a whole. The centre of mass of a system of particles will be a crucial concept here. The NCERT solutions Class 11 Physics Chapter 7 will cover the motion of the centre of mass of a system of particles and the usefulness of this concept in understanding the motion of extended bodies. How can a large class of problems with elongate bodies be solved by considering them to be rigid bodies?


You will learn about the unchanging shape of an ideal rigid body in the NCERT solutions Class 11 Physics rotational motion. How do the distances between all pairs of particles of such a body do not change? It is obvious from this definition of a rigid body that no real body is rigid, how real bodies deform under the influence of forces. But in numerous situations the deformations are negligible.


The chapter also focuses on what kind of motion can a rigid body have. It will focus on the angular velocity relation with linear velocity, about torque and angular momentum. It includes the kind of motion a rigid body can have and how the centre of mass of a system of particles proceeds as if all the mass of the system was focused at the centre of mass. The total momentum of a system of particles is adequate to the merchandise of the entire mass of the system and therefore the velocity of its centre of mass.


The linear momentum of a system of particles in the Class 11 Physics System of Particles and Rotational Motion NCERT solutions is also properly explained. The rotation of a fixed axis; the direction of the vector ω does not change with time. For the more common rotation, both the magnitude and therefore the direction of ω may change from instant to instant. The time rate of the entire momentum of a system of particles a few points is adequate to the sum of the external torques working on the system taken about the same point.


The analogue of mass in rotational motion is additionally thoroughly explained. What is the radius of gyration? The similitude between rotational motion and translational motion is described with examples. The angular momentum in case of rotation about a fixed axis is to be understood thoroughly. The rolling motion and conservation of angular momentum have been described in the rotation Class 11 NCERT Solutions.


Recall

In Class 11 Rotational Motion NCERT solutions, it focuses on what you were taught in your previous class about. The theory of the System of Particles and Rotational Motion is explained. What kind of motion can a stiff body have? All of these questions are the main focus of this chapter. The centre of Mars is also explained in the CBSE Class 11 Physics Chapter 7 NCERT solutions.


Exercise

The NCERT Solution Class 11 Physics Chapter 7 is prepared by our experts, that helps you to understand the questions and answers easily.

Based on your understanding of what you have learnt until now, you will have to find out the solutions by explaining every minute detail. To find out the Physics Class 11 rotational motion NCERT solutions, you can access the PDF file to find the solutions that are prepared by experts to learn more.


Key Features of NCERT Solutions for Class 11 Physics Chapter

The NCERT Physics Class 11 Chapter 7 solutions will help all the students to learn about the chapter thoroughly. Experts have made sure that the answers are adequately explained and are crisp so that the students can understand it without any help.

  • The NCERT solution of Chapter 7 Physics Class 11 covers all the crucial aspects of the chapter.

  • The Class 11 Physics rotational motion NCERT solutions are mostly written in pointers and to the point so that you can get good marks in the exam.

  • The Class 11th Physics Chapter 7 solutions will help the students to a great extent to prepare for their exam.

  • Students can revise the Physics Class 11 System of Particles and Rotational Motion solutions before appearing the exams.

  • Students can download the System of Particles and Rotational Motion Class 11 NCERT solutions pdf easily in just a few clicks.

  • Students can employ these NCERT solutions for the Class 11 Physics system of particles to understand the entire chapter easily.

FAQs (Frequently Asked Questions)

1. What is the Condition for a Body’s Translational Equilibrium?

For all the translations equilibrium, the vector sum of all the forces that are acting on a particular body has to be zero.

2. State the Position of a Triangular Lamina’s Centre of Mass.

The position of a triangular lamina’s centre of mass is at the centroid.

3. Name the factors on which the Moment of Inertia of a body depends?

Moment of inertia refers to the quantity expressed by the body resisting angular acceleration. Angular acceleration is the sum of the product of the mass of each particle and its square of a distance from the axis of rotation. The moment of inertia is directly proportional to the mass and the distance of particles from their axis of rotation. The moment of inertia depends on:

  • The mass distribution of a body

  • Shape and size of the object

  • Axis of rotation

4. What is the difference between Center of Gravity and Centre of Mass Class 11?

The Center of Gravity is the point where the whole weight of the body is said to be concentrated. It is the point where the resultant of the gravitational force on all the particles of the body acts. The Center of Mass is the point where the whole mass of the body is supposed to be concentrated. The point is said to describe the motion of the body as a particle.

5. Which chapter is System of Particles and Rotational Motion Class 11?

System of Particles and Rotational Motion is the seventh Chapter in Class 11 Physics. Students who want to score good marks in Physics can download the NCERT Solutions Chapter 7 Class 11 Physics online free of cost. CoolGyan provides Solutions to all NCERT questions and important questions on the CoolGyan website and the app. Students can prepare for their school exams and entrance exams easily. All the solutions are given by expert teachers and can help students to understand the concepts. 

6. What is a rigid body Class 11 Physics?

A rigid body may be defined as a body in which the distance between all the molecules remains constant under the influence of any external force. A rigid body does not change its shape during motion. Students can get answers to simple questions online at CoolGyan. Expert academicians provide important questions and answers for all chapters for free. CoolGyan is a learning platform for kids of all classes as they can download solutions for all subjects. 

7. What are the important definitions to remember in Class 11 Physics Chapter 7?

Class 11 Physics Chapter 7 is an important chapter from the exam point of view. The chapter Systems of Particles And Rotational Motion include many important definitions that can help students to score good marks in Class 11 Physics. NCERT Solutions Class 11 Physics Chapter 7 can help students to understand the concepts properly. They can find all the important questions and definitions here to prepare for their exams. 

8. What is rotatory motion in Class 11 Physics?

The rotatory motion is the motion of the body if the body moves about the fixed axis without any change in the radius of its motion.

The examples of rotatory motion are-

  • The motion of the earth about its axis around the sun.

  • The motion of wheels and the steering wheel about its axis while driving a car.

  •  The motion of a spinning wheel on its axis.