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i just want to know that if body moves from rest how its centre of mass remain zero after coming in motion?plz explain with more than 4 examples so that i can able to understand the applications of c.o.m. in physics for best preparation of iit jee 2011.

i just want to know that if body moves from rest how its centre of mass remain zero after coming in motion?plz explain with more than 4 examples so that i can able to understand the applications of c.o.m. in physics for best preparation of iit jee 2011.

Grade:11

1 Answers

Badiuddin askIITians.ismu Expert
147 Points
11 years ago

Dear shanky

if you are taking about a single rigid body then its center of mass will also move if the body moves.

 and if you are consederinf a system of more than two body then its center of mass may remain in rest provided that

  = m1 V1 + m2V2 + m3V3 + ....... mnVn = 0 

  where m1,m2,m3,m4   are the mass of different body  and V1,V2,V3 are their velocities repetively .


if m1 V1 + m2V2 + m3V3 + ....... mnVn ≠  0   then center of mass of the center will also move.


Please feel free to post as many doubts on our discussion forum as you can.
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Regards,
Askiitians Experts
Badiuddin


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