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sir, i am facing problems to build concepts of energy conservatios in chapters like wpe,impulse momentum and rotational..plz tell me wat to do????????

sir,


i am facing problems to build concepts of energy conservatios in chapters like wpe,impulse momentum and rotational..plz tell me wat to do????????

Grade:12

1 Answers

Rathod Shankar AskiitiansExpert-IITB
69 Points
10 years ago

 

Dear OCEAN GODRE,

 

1) learn the corodinate systems thoroughly

 

there are 3 coordinate systems\

a)   cartesian coordintae systems   

1437_22664_threed1.gif

 

using these coordinates u can solve momentums and energy in XYZ coordinates

example :  momentum along x-aixs     m1*v1+m2*v2=m1u1+m2u2 like this

 

b)polar coordinates

 

spherical coordinates system is confusing but see the directions of  r, θ, Φ  so that u can dived momentums along those axes.

 

1091_22664_spherical-coords.gif

 

 

 

Cylindrical coordinates

 

828_22664_CylindricalCoordinates_1001.gif

x=rcosθ

y=rsinθ

z=z

 

these are the 3 important coordinate systems u have to remember.

 

using these coordinate systems we can ddived energy conservatios impulse momentum and rotational into 3 axes. after that apply conservation of momentum in x direction and y direction and z direction

 

after that u have to have knowledge on how many types of energies are there. kinetic(if m has some speed) , potential(if m has some height) , rotational( if m is rotating)

impulse =mv/t

 

K_{rotation} = \frac{1}{2} I \omega^2

where

ω is the angular speed
 I \ is the moment of inertia



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Askiitians Expert

Rathod Shankar Singh

IIT Bombay


 

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