Solution i Kepler's discovered Laws of Planetary Motion ii according to laws of gravitation F is proportional to m1×m2then if m1and m2 changes as 2m1 and 2m2then F' will become =4F hence, answer will be 4F

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Solution
i.
Kepler's discovered Laws of Planetary Motion.
ii.
according to laws of gravitation

F i s p r o p o r t i o n a l t o m_{1} \times m_{2} t h e n i f m_{1} a n d m_{2} c h a n g e s a s 2 m_{1} a n d 2 m_{2} t h e n F' w i l l b e c o m e = 4 F

hence, answer will be 4F

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