System of Particles and Rotational Motion - Video
9868233590System of Particles and Rotational Motion - Video Lecture
More Physics Free Demo Videos
Introduction
0:00
Rotational Motion
0:42
Rigid bodies
2:10
Motion of a Rigid body
4:31
Rotational Motion:Real Life examples
7:51
Rotational Motion about a Fixed Axis
9:05
Rotational Motion:Spinning Top
11:42
Rotational Motion:Conclusion
12:57
System of particles
13:14
Centre of mass of a 2- particle system
13:33
Centre of mass of a Rigid body
20:19
Centre of mass of homogeneous bodies
25:10
Problem 1
27:04
Problem 2
29:15
Problem 3
34:58
Velocity of Centre of Mass
40:56
Velocity & Acceleration of CM
41:36
Acceleration of Centre of Mass
45:47
Linear Momentum
47:13
Vector product of two vectors
51:16
Properties of Vector product
56:46
Mathematical form of vector product
1:00:33
Angular Velocity
1:05:35
Angular Acceleration
1:09:13
Torque
1:10:11
Mathematical expression for Torque
1:13:56
Angular Momentum
1:17:56
Relation between torque & angular momentum
1:19:01
Numericals
1:24:01
Problem 1
1:24:15
Problem 2
1:26:33
Equilibrium of rigid body
1:30:08
Couple
1:32:01
Principle of moments of Lever
1:34:24
Centre of gravity
1:41:53
Problem 1
1:48:13
Moment of Inertia
1:54:22
Calculation I: Moment of Inertia of a thin ring
2:00:36
Moment of Inertia for a rigid massless rod
2:03:39
Uniform rod about perpendicular bisector
2:05:56
Uniform circular plate about its axis
2:12:38
Hollow cylinder about its axis
2:17:42
Solid cylinder about its axis
2:19:39
Moment of Inertia
2:24:01
Moment of Inertia of different bodies
2:24:30
Kinematics equations of rotational motion
2:26:15
Dynamics
2:29:6
Analogy Translational & Rotational Motion
2:29:49
Conservation of Angular Momentum
2:31:32
Problem 1
2:33:21
Problem 2
2:35:21
Rolling Motion
2:38:23
Rolling Motion of a disc
2:40:18
K.E for rolling motion
2:45:20
Problem 2
2:47:54
System of Particles and Rotational Motion
Class 11 Physics Video (Go Main Menu)
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System of Particles and Rotational Motion-Video Lecture
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System of Particles and Rotational Motion
Overview
System of Particles and Rotational Motion Class 11 Physics NCERT Chapter 6
NCERT Solutions Class 11 Physics Chapter 7 – Free PDF Download
*According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 6.
NCERT Solutions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion, are important study materials that will help students understand the topic more deeply, thereby guiding them in scoring good marks in the Class 11 exam and entrance examinations. These solutions contain answers to all the questions present in the NCERT textbook. Students who are not able to understand the concepts during class hours can get their doubts clarified using the NCERT Solutions from Neetbharath.in.
In this chapter, we will understand the motion of extended bodies, i.e., a system of particles. We shall consider the motion of a system as a whole. The main concept here would be the centre of mass of a system of particles. We will discuss its motion and its usefulness as per the latest update on the CBSE Syllabus 2023-24. Students can now download the authentic answers of the NCERT Solutions for Class 11 Physics from the link available here.
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1. Give the location of the centre of mass of: (i) sphere, (ii) cylinder, (iii) ring, (iv) cube, each of uniform mass density. Does the centre of mass of a body necessarily lie inside the body? 2. In the HCl molecule, the separation between the nuclei of the two atoms is about 1.27 A˚(1A˚=10−10 m). Find the approximate location of the CM of the molecule, given that a chlorine atom is about 35.5 times as massive as a hydrogen atom and nearly all the mass of an atom is concentrated in its nucleus.
3. Find the center of mass of a uniform L shaped lamina (a thin flat plate) with dimensions as shown. The mass of the lamina is 3 Kg.
4. A child sits stationary at one end of a long trolley moving uniformly with a speed V on a smooth horizontal floor. If the child gets up and runs about on the trolley in any manner, what is the speed of the CM of the (trolley + child) system ?
5. Two particles, each of mass m and speed v, travel in opposite directions along parallel lines separated by a distance d. Show that the vector angular momentum of the two particle system is the same whatever be the point about which the angular momentum is taken.
6. A car weighs 1800 kg. The distance between its front and back axles is 1.8 m. Its centre of gravity is 1.05 m behind the front axle. Determine the force exerted by the level ground on each front wheel and each back wheel.
7. A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s−1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?
8. A child stands at the centre of a turntable with his two arms outstretched. The turntable is set rotating with an angular speed of 40 rev/min. How much is the angular speed of the child if he folds his hands back and thereby reduces his moment of inertia to 2/5 times the initial value? Assume that the turntable rotates without friction.
9. A hoop of radius 2 m weighs 100 kg. It rolls along a horizontal floor so that its centre of mass has a speed of 20 cm/s. How much work has to be done to stop it?
10. NCERT notes class 11 physics System of Particles and rotational motion
11. Class 11 physics System of Particles and rotational motion
12. NCERT class 11 physics chapter 7
13. NCERT class 11 physics chapter 7 System of Particles and rotational motion
14. NCERT solutions class 11 physics chapter 7 System of Particles and rotational motion
15. Class 11 physics System of Particles and rotational motion JEE questions
In This Video we cover
Introduction
0:00
Rotational Motion
0:42
Rigid bodies
2:10
Motion of a Rigid body
4:31
Rotational Motion:Real Life examples
7:51
Rotational Motion about a Fixed Axis
9:05
Rotational Motion:Spinning Top
11:42
Rotational Motion:Conclusion
12:57
System of particles
13:14
Centre of mass of a 2- particle system
13:33
Centre of mass of a Rigid body
20:19
Centre of mass of homogeneous bodies
25:10
Problem 1
27:04
Problem 2
29:15
Problem 3
34:58
Velocity of Centre of Mass
40:56
Velocity & Acceleration of CM
41:36
Acceleration of Centre of Mass
45:47
Linear Momentum
47:13
Vector product of two vectors
51:16
Properties of Vector product
56:46
Mathematical form of vector product
1:00:33
Angular Velocity
1:05:35
Angular Acceleration
1:09:13
Torque
1:10:11
Mathematical expression for Torque
1:13:56
Angular Momentum
1:17:56
Relation between torque & angular momentum
1:19:01
Numericals
1:24:01
Problem 1
1:24:15
Problem 2
1:26:33
Equilibrium of rigid body
1:30:08
Couple
1:32:01
Principle of moments of Lever
1:34:24
Centre of gravity
1:41:53
Problem 1
1:48:13
Moment of Inertia
1:54:22
Calculation I: Moment of Inertia of a thin ring
2:00:36
Moment of Inertia for a rigid massless rod
2:03:39
Uniform rod about perpendicular bisector
2:05:56
Uniform circular plate about its axis
2:12:38
Hollow cylinder about its axis
2:17:42
Solid cylinder about its axis
2:19:39
Moment of Inertia
2:24:01
Moment of Inertia of different bodies
2:24:30
Kinematics equations of rotational motion
2:26:15
Dynamics
2:29:6
Analogy Translational & Rotational Motion
2:29:49
Conservation of Angular Momentum
2:31:32
Problem 1
2:33:21
Problem 2
2:35:21
Rolling Motion
2:38:23
Rolling Motion of a disc
2:40:18
K.E for rolling motion
2:45:20
Problem 2
2:47:54
