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The mass of the sun is about several times that of the earth It's urgent!
Mass of the sun: 1.989 × 10 ^ 30 kg
The mass of the earth is 5.976 × 10 ^ 24 kg
Mass of the sun / mass of the earth = 3.32831 × 10 ^ 6
How many times the mass of the sun is that of the earth
The period T1 of the earth around the sun, the orbit radius R1, the period T2 of the moon around the earth, the orbit radius R2,
How many times the mass of the sun is that of the earth?
The calculation of celestial bodies can be calculated by the equations of universal gravitation and centripetal force, because between the earth m and the sun M: GMM / R ^ 2 = ma = 4 π ^ 2MR / T ^ 2 G -- gravitational constant T -- earth revolution period, so m = 4 π ^ 2R ^ 3 / GT ^ 2 = 4 π ^ 2 * (1.49 * 10 ^ 11) ^ 3 / [6.67 * 10 ^ 11 * (3.16 * 10 ^ 7) ^ 2] = 1.96 * 10 ^ 30kg
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