Question 16 Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 × 10 24 kg and of the Sun = 2 × 10 30 kg. The average distance between the two is 1.5 × 10 11 m.
Class 9 - Science - Gravitation Page 144
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mass of earth = 6 × 10²⁴ Kg
mass of sun = 2 × 10^30 Kg
distance between earth and sun = 1.5 × 10¹¹ m
F = GMm/r²
= 6.67 × 10-¹¹ × 6 × 10²⁴ × 2 × 10^30/(1.5 × 10¹¹)²
= { 6.67 × 6 × 2/2.25} × 10¹³ × 10^30× 10-²²
= 35.57 × 10²¹ N
= 3.557 × 10²² N
mass of sun = 2 × 10^30 Kg
distance between earth and sun = 1.5 × 10¹¹ m
F = GMm/r²
= 6.67 × 10-¹¹ × 6 × 10²⁴ × 2 × 10^30/(1.5 × 10¹¹)²
= { 6.67 × 6 × 2/2.25} × 10¹³ × 10^30× 10-²²
= 35.57 × 10²¹ N
= 3.557 × 10²² N
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