Question -
Answer -
Orbital radius of the Earth around theSun,┬аr┬а= 1.5 ├Ч 1011┬аm
Time taken by the Earth tocomplete one revolution around the Sun,
T┬а= 1 year = 365.25 days
= 365.25 ├Ч 24 ├Ч 60 ├Ч 60 s
Universal gravitational constant, G = 6.67 ├Ч10тАУ11┬аNm2┬аkgтАУ2
Thus, mass of the Sun canbe calculated using the relation,
Hence,the mass of the Sun is 2 ├Ч 1030┬аkg.