## Tuesday, October 23, 2007

### Study guide H C Verma JEE Physics Ch. 9 CENTRE OF MASS, LINEAR MOMENTUM AND MASS

Centre of mass and its motion;
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Sections of the chapter
1. Centre of mass
2. Centre of mass og continuous bodies
3. Motion of the Centre of mass

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Study Plan

Day 1

9.1. Centre of mass

Ex. 9.1, 9.2
2. Centre of mass of continuous bodies
Worked out examples (WOE): 1 to 3

Day 2
9.3. Motion of the Centre of mass
Ex. 9.3
4. Linear momentum and its conservation principle
5. Rocket propulsion

Day 3
Chapter 9
WOE 4,5,6,7,8
Exercises 1 to 5

Day 4

9.6. Collision
Ex. 9.4
7. Elastic collision in one dimension
WOE 9 to 12

Day 5
9.8. Perfectly inelastic collision in one dimension
Ex. 9.5
9. Coefficient of restitution
10. Elastic collision in two dimensions
11. Impulse and impulsive force
WOE 13 to 14

Day 6
Chapter 9
Objective I 1 to 19

Day 7
Chapter 9
Objective II 1 to 11

Day 8
Chapter 9
WOE 15 to 20
Exercises 6 to 10

Day 9
Chapter 9
WOE 21 to 24
Exercises 11 to 15

Day 10
Chapter 9
Exercises 16 to 25
Revison Period

Day 11
Chapter 9 Revision
Exercises 26 to 30

Day 12
Chapter 9 Revision
Exercises 31 to 35

Day 13
Chapter 9 Revision
Exercises 36 to 40

Day 14
Chapter 9 Revision
Exercises 41 to 45

Day 15
Chapter 9 Revision
Exercises 46 to 50

Day 16
Chapter 9 Revision
Exercises 51 to 55

Day 17
Chapter 9 Revision
Exercises 56 to 60

Day 18
Chapter 9 Revision
Exercises 61 to 64

Day 19
Chapter 9 Revision
Questions for Short Answer 1 to 12

Day 20
Chapter 9 Revision
Questions for Short Answer 13 to 25

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Audio visual lecture

Center of Mass
www.curriki.org/nroc/Introductory_Physics_1/lesson11/Container.html

Impulse and Momentum
www.curriki.org/nroc/Introductory_Physics_1/lesson12/Container.html

Conservation of Linear Momentum, Collisions
www.curriki.org/nroc/Introductory_Physics_1/lesson13/Container.html

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JEE question 2007 paper I

STATEMENT-1

In an elastic collision between two bodies, the relative speed of the bodies after collision is equal to the relative speed before
the collision

because

STATEMENT-2

In an elastic collision, the linear momentum of the system is conserved

(A) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1
(B) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1
(C) Statement-1 is True, Statement-2 is False
(D) Statement-1 is False, Statement-2 is True

Correct choice: (B)
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