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Question: Two identical solid spheres of radius R placed in contact with each other, the gravitational attract...

Two identical solid spheres of radius R placed in contact with each other, the gravitational attraction between them is proportional to –

A

R2

B

R–2

C

R4

D

R–4

Answer

R4

Explanation

Solution

F =

F = Gm24R2\frac { \mathrm { Gm } ^ { 2 } } { 4 \mathrm { R } ^ { 2 } } =

F =

where r is density so F µ R4