# NCERT Solutions for Class 11 Physics Chapter 7 System Of Particles And Rotational Motion

NCERT Solutions for Class 11 Physics Chapter 7 Systems Of Particles And Rotational Motion: The chapter starts with the concepts of the rigid body. Ideally speaking a rigid body is a body with a perfectly definite and unaltering shape. The distances between all pairs of particles of such a body do not change. According to this definition, the bodies that we see in our real life are not rigid because it will deform when force is applied. But when this deformation is negligible we consider the bodies as rigid. In NCERT Solutions for Class 11 Physics Chapter 7 Systems Of Particles And Rotational Motion, we consider the bodies to be rigid and we study the motion of the rigid body. The two main topics that we come across this chapter are the moment of inertia and centre of mass. Below is a table of the moment of inertia of certain bodies of mass m about a particular axis.

 Body Axis Moment of inertia A thin circular ring of radius R Perpendicular to the plane, at the centre $mR^2$ A thin circular ring of radius R Diameter $\frac{mR^2}{2}$ A thin rod of length l Perpendicular to the rod, at the midpoint $\frac{ml^2}{12}$ A circular disc of radius R Perpendicular to the disc at the centre $\frac{mR^2}{2}$ A circular disc of radius R Diameter $\frac{mR^2}{4}$ A hollow cylinder of radius R Axis of cylinder ${mR^2}$ A solid cylinder of radius R Axis of cylinder $\frac{mR^2}{2}$ A solid sphere of radius R Diameter $\frac{2mR^2}{5}$

## The main headings of the NCERT Solutions for Class 11 Physics Chapter 7  are listed below:

7.1 Introduction

7.2 Centre Of Mass

7.3 Motion Of Centre Of Mass

7.4 Linear Momentum Of A System Of Particles

7.5 Vector Product Of Two Vectors

7.6 Angular Velocity And Its Relation With Linear Velocity

7.7 Torque And Angular Momentum

7.8 Equilibrium Of A Rigid Body

7.9 Moment Of Inertia

7.10 Theorems Of Perpendicular And Parallel Axes

7.11 Kinematics Of Rotational Motion About A Fixed Axis

7.12 Dynamics Of Rotational Motion About A Fixed Axis

7.13 Angular Momentum In Case Of Rotation About A Fixed Axis

7.14 Rolling Motion

The NCERT Solutions for Class 11 Physics Chapter 7 Systems Of Particles And Rotational Motion is very important as far as board and competitive exams are considered. We also provide the NCERT Solutions for Class 11 Physics Chapter 7 in detail.

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## NCERT Solutions for class 11 Physics

 Chapter-1 Physical world Chapter-2 Chapter-3 Chapter-4 Chapter-5 Chapter-6 Chapter-7 Chapter-8 Chapter-9 Chapter-10 Mechanical Properties of Fluids Chapter-11 Chapter-12 Chapter-13 Kinetic Theory Chapter-14 Chapter-15

## NCERT Solutions for Class 11- Subject wise

 NCERT solutions for Class 11 Biology NCERT solutions for Class 11 Maths NCERT solutions for Class 11 Chemistry NCERT solutions for Class 11 Physics

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