MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
Tarun Saxena Grade: 12
        

QUESTION - NO FORCE IS ACTING ON A NONRIGID BODY , STILL ITS ANGULAR AND LINEAR MOMENTUM REMAINS CONSTANT HOW ?

6 years ago

Answers : (2)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear student,


he angular momentum of a system of particles (e.g. a rigid body) is the sum of angular momenta of the individual particles. For a rigid body rotating around an axis of symmetry (e.g. the fins of a ceiling fan), the angular momentum can be expressed as the product of the body's moment of inertia I (a measure of an object's resistance to changes in its rotation rate) and its  ω:


\mathbf{L} = I \boldsymbol{\omega} \, .


















































Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.


All the best.


Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.


Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..


 


Askiitians Expert


Sagar Singh


B.Tech, IIT Delhi


















































6 years ago
vikas askiitian expert
510 Points
										

 F = mdv/dt 


if F = 0 then ,


 dP/dt = 0


this is possible if, P = k(constant ) coz differentiation of constant is always 0....


 P = constant ...          (momentam remains constant)


 


now , T(torque) = dL/dt                              (L is angular momentam)


if T is 0 then


    dL/dt = 0


 L = k(constant)                      (angular momentam remains conserved)


if force is 0 then we can say that linear momentam is 0 but we cannot say anything about angular momentam ...


 


eg=> a disk is moving  on a horizontal surface  ,


 case1)


two equal forces in opposite direction acts towards center then no net force acts on center of mass so its linear  as well as angular momentam will remain conserved ...


case2)


 if forces are not acting towards center but are in opposite direction then also net force on center of mass is 0 but these forces are producing torque so angular momentam will change...


approve if u like my ans


 


 


 

6 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: R 2,600
  • View Details
  • Complete Physics Course - Class 11
  • OFFERED PRICE: R 2,800
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details