Question

How will you 'weigh the sun', that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 x 10⁸ km

Answer 1

Explanation:

Given that orbital radius, $\sf{r\:=\:1.5\times 10^8\,km\:=\:1.5\times 10^{11}m}$

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We know that, Time for one revolution = 1year = 365.25 x 24 x 60 x 60s

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Now,

$\sf M_E = \dfrac{4\pi^2 r^3}{GT^2}$

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G is Universal Gravitational Constant.

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$\sf M_E = \dfrac{4\pi^2\times (1.5\times 10^8)^3}{6.67\times 10^{-11}\times (3.156\times 10^7)^2}$

$\sf{=2.005\times 10^{30}kg}$

$\sf{=2.0\times 10^{30}kg}$

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The estimate mass of sun is$\sf\underline{=2.0\times 10^{30}kg}$

Answer 2

Answer:

The above mate has given u ur ans...........