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Two balls, each of radius R, equal mass and density are placed in contact, then the force of gravitation between them is proportional to –?

Two balls, each of radius R, equal mass and density are placed in contact, then the force of gravitation between them is proportional to –?

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2 Answers

Kaustubh Nayyar
27 Points
7 years ago
F = ( G m2 ) / (2R) = Gm/ 4R2
Hence propotional to 1/4R2
Mitansh Shroff
24 Points
5 years ago
F=GM2/(2R)2
  =GM2/4R2
Therefore, M=(density)*Volume
M=(density)*4piR3/3
M2=(density)2.(4pi/3)2.R6
Here,F=G.(density)2.(4pi/3)2.R
Therefore F is proportional to R4
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