System of particle & Rigid body PPT Physics Class 11

 Page 1


SYSTEM OF 
PARTICLES 
AND 
ROTATIONAL 
MOTION
Page 2


SYSTEM OF 
PARTICLES 
AND 
ROTATIONAL 
MOTION
Definitions of 
some special 
terms
• 1. Angular position (F) - The angular 
position of a particle is the angle ? 
made between the line connecting the 
particle to the original and the positive 
direction of the x-axis, measured in a 
counterclockwise direction.
• . Angular displacement (?) - The radian 
value of the angle displaced by an 
object on the center of its path in 
circular motion from the initial position 
to the final position is called the angular 
displacement.
Page 3


SYSTEM OF 
PARTICLES 
AND 
ROTATIONAL 
MOTION
Definitions of 
some special 
terms
• 1. Angular position (F) - The angular 
position of a particle is the angle ? 
made between the line connecting the 
particle to the original and the positive 
direction of the x-axis, measured in a 
counterclockwise direction.
• . Angular displacement (?) - The radian 
value of the angle displaced by an 
object on the center of its path in 
circular motion from the initial position 
to the final position is called the angular 
displacement.
*Angular acceleration- Angular acceleration 
of an object in
circular motion is the rate of change of 
angular velocity
Unit- rads^-2
Direction- By right hand rule
*Angular Velocity (?)- Angular velocity of an 
object in circular
motion is the rate of change of angular 
displacement
? = ? / t
Unit – rads^-1
Vector direction by
Right hand rule
Page 4


SYSTEM OF 
PARTICLES 
AND 
ROTATIONAL 
MOTION
Definitions of 
some special 
terms
• 1. Angular position (F) - The angular 
position of a particle is the angle ? 
made between the line connecting the 
particle to the original and the positive 
direction of the x-axis, measured in a 
counterclockwise direction.
• . Angular displacement (?) - The radian 
value of the angle displaced by an 
object on the center of its path in 
circular motion from the initial position 
to the final position is called the angular 
displacement.
*Angular acceleration- Angular acceleration 
of an object in
circular motion is the rate of change of 
angular velocity
Unit- rads^-2
Direction- By right hand rule
*Angular Velocity (?)- Angular velocity of an 
object in circular
motion is the rate of change of angular 
displacement
? = ? / t
Unit – rads^-1
Vector direction by
Right hand rule
Angular 
equations 
of 
movemen
t
1. ? = ?0 + at
2. ? = (? + ?0 )t/2
3. ? = ?0t + ½ at^2
4. ?2 = ?0^2 + 2a?
Page 5


SYSTEM OF 
PARTICLES 
AND 
ROTATIONAL 
MOTION
Definitions of 
some special 
terms
• 1. Angular position (F) - The angular 
position of a particle is the angle ? 
made between the line connecting the 
particle to the original and the positive 
direction of the x-axis, measured in a 
counterclockwise direction.
• . Angular displacement (?) - The radian 
value of the angle displaced by an 
object on the center of its path in 
circular motion from the initial position 
to the final position is called the angular 
displacement.
*Angular acceleration- Angular acceleration 
of an object in
circular motion is the rate of change of 
angular velocity
Unit- rads^-2
Direction- By right hand rule
*Angular Velocity (?)- Angular velocity of an 
object in circular
motion is the rate of change of angular 
displacement
? = ? / t
Unit – rads^-1
Vector direction by
Right hand rule
Angular 
equations 
of 
movemen
t
1. ? = ?0 + at
2. ? = (? + ?0 )t/2
3. ? = ?0t + ½ at^2
4. ?2 = ?0^2 + 2a?
MOTION
TRANSLATION
COMBINATION OF 
TRANSLATION AND 
ROTATION
ROTATION