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can u pls tell me how R2=M1(R1+R2)/(M1+M2) COMES.. i am not able to solve it.. please reply fast..

can u pls tell me how R2=M1(R1+R2)/(M1+M2) COMES.. i am not able to solve it.. please reply fast..
 

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Grade:12

4 Answers

nani
32 Points
7 years ago
plz send attachments clearly we will try to tell answer,,,,,,,,,,,
 
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naveen royals
23 Points
7 years ago
please send attachments clearly i will try to answer your question............................
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jayesh
32 Points
7 years ago
please press ctrl and + button to zoom.
and answer my query please................................................................... 
Subhiksha
50 Points
7 years ago
It is easy..
 
Since it is an atom, the nucleus is the COM. So, eqauting the moments on both sides,
 
m1r1= m2r2
Even if u simply the equation in your doubt, you get the same relation. I have no idea why they gave this equation in that manner, though.
 
From this,
r2= 2r1
and r1+r2= 12 Ao
 
On solving these, they found r1, and they have proceeded.
Hope your doubt is cleared.

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