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

 

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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. 

 Q-7.1 Does the centre of mass of a body necessarily lie inside the body?

View all NCERT Solutions for Class 11 Physics Chapter 7 System Of Particles And Rotational Motion here.

NCERT Solutions for class 11 Physics

Chapter-1

Physical world

Chapter-2

Units and Measurement

Chapter-3

Motion in a straight line

Chapter-4

Motion in a Plane

Chapter-5

Laws of Motion

Chapter-6

Work, Energy and Power

Chapter-7

System of Particles and Rotational motion

Chapter-8

Gravitation

Chapter-9

Mechanical Properties of Solids

Chapter-10

Mechanical Properties of Fluids

Chapter-11

Thermal Properties of Matter

Chapter-12

Thermodynamics

Chapter-13

Kinetic Theory

Chapter-14

Oscillations

Chapter-15

Waves

 

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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