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NCERT Solutions for Class 11 Physics Chapter 7 – Systems of Particles and Rotational Motion

NCERT Solutions for Class 11 Physics Chapter 7 – Systems of Particles and Rotational Motion prepared by our subject matter experts of physics lay out in detail the concepts and the fundamental principles behind the particles and their motions. Chapter 7 introduces you to the theoretical as well as mathematical parts of these concepts which we have brought to you in a clear and stepwise manner.

The NCERT Solutions for Class 11 Physics Chapter 7 includes 33 questions. You will learn topics like the centre of mass of an object, motion of the centre of mass, the equilibrium of rigid body, the motion of a rigid body, linear momentum of a system of particles, vector product, angular acceleration, torque and theorem of the perpendicular axis. There are many formulae introduced in this chapter that you need to understand if you want to solve all the NCERT questions correctly.

Important Topics for NCERT Solutions for Class 11 Physics Chapter 7

NCERT Solutions for Class 11 Physics book includes 14 sections namely,  Centre of Mass, Motion of Center of Mass, Linear Movement of a System of Particles, Vector Product of Two, Vectors, Angular Velocity and its Relation with Linear Velocity, Torque and Angular, Momentum, Equilibrium of a Rigid Body, Moment of Inertia, Theorems of Perpendicular and, Parallel Axes, Kinematics of Rotational Motion about a Fixed Axis, Dynamics of Rotational, Motion about a Fixed Axis, Angular Momentum in case of Rotation about a Fixed Axis and Rolling Motion.

Various aspects of Mass, Motion and Rotation have been discussed at length in these sections. It also has 33 problems and several examples to help you assess your understanding of the topic. The CBSE syllabus is set out inevitably to enable you to grasp the difficult concepts sequentially.

The chapter begins with the fundamental concepts of the particles, their systems and their motion in the first section before moving on to the next sections of the chapter for detailed information. In the process, you will learn about Mass, its centre, the concept of motion of the centre of mass. You are also introduced to the concept of Momentum, types of motion, linear motion of a system of particles, vectors, and product of two vectors in the next 3 chapters.

In the sixth section of the chapter, you will learn about velocity and the distinction between an Angular and Linear Velocity of particles. The next section is devoted to the subject of Torque and Angular Momentum. It distinguishes the Linear Motion and Rotational Motion. After reading this chapter, you come to know that rotational motion has an angular velocity, torque, and angular momentum.

You will further learn about Inertia, the moment of inertia, Kinematics and Dynamics of Rotational motion and rolling motion in the subsequent section of the chapter. By the time you complete this chapter among the other things, you will be familiar with the following:

  1. How to determine the motion of the centre of mass; 
  2. Torque and its effect on a system of particles; 
  3. The Second Law of Newton for finite-sized bodies. 

Exercise-Wise Discussion of NCERT Solutions for Class 11 Physics Chapter 7

  • NCERT Class 11 Physics Chapter 7 includes two exercises with 33 questions. The first exercise is the main exercise of the chapter includes 21 questions while the second exercise is an additional exercise that includes 12 questions. 
  • Most of the questions of the chapter are numerical-based questions where you need to apply the formulae and laws that you have learned in the chapter and find the correct answers. 
  • The questions are based on angular momentum, the centre of mass, torque, angular acceleration, the tension in the rope, kinetic energy, moment of inertia, theorem of perpendicular axis etc. 
  • The chapter also includes short answer questions such as state true or false. In some questions, you are asked to prove theorems related to the chapter.

Benefits of NCERT Solutions for Class 11 Physics Chapter 7 by Instasolv

Physics is an abstract subject, Despite daily life examples, the reasons behind motion, inertia are hard to understand without the help of expert guidance.  Our NCERT Solutions for Class 11 Physics Chapter 7 successfully bridge the gap between theory and practical knowledge. We provide an appropriate description of the cause and effect of every concept in detail for you to grasp easily. The True or False Questions too have been given not only the right answer but are provided with the reasons. Clear all your doubts and get a firm hold on the concepts of Systems of Particles and Rotational Motion in Physics to score high marks in CBSE exams.