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11. If the earth is a point mass of 6 x 1024 kg revolving aroundthe sun at a distance of 1.5 x 108 km and in time,T 3.14 x 10's, then the angular momentum of the eartharound the sun is |
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Answer» the mass of the earth, m = 6×10²⁴ kgAssume the mass of the sun is Mdistance between earth and sun , r = 1.5×10¹¹mforce between sun and earth , F = 3.5×10²² N use gravitational force formula, F = GMm/r²3.5× 10²² = 6.67× 10⁻¹¹× 6× 10²⁴ M/(1.5× 10¹¹)²3.5× 10²²× 2.25× 10²²/(6.67× 6× 10¹³) = MM = 0.196 × 10³¹ kg hence,mass of the sun is 1.96× 10³⁰ kg |
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