Is the answer 392/169 ? PLS IGNORE THIS REPLY IF IT IS WRONG [1]
the moon revolves round the earth 13 times in one year If the ratio of sun-earth distance to the earth-moon distance is 392 then the ratio of the masses of sun and earth will be
Please solve it
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9 Answers
Anirudh Narayanan
·2009-02-06 17:37:48
Anirudh Narayanan
·2009-02-06 17:49:55
T prop to 1/v
But v prop to √M/R (R is radius of orbit + planet's radius)
Thus T prop to √R/M
Te-m/Te-s = 1/13 (GIVEN)
√ReMs/MeRs = 1/13
Thus Ms/Me = (1/169) x (Rs/Re)
= 392/169