Question

the mass of the earth is 6×10 ^ 24 kg and that of moon is 7.4 × 10 ^ 24 Kg .If the distance between the earth and the moon is 3.84 × 10 ^ 5 km.Calculate the gravitational force by taking 6.67×10^-11 Nm^2kg^-2.​

Answer 1

Answer:

771.21 × 10 ^ 55 N

Step-by-step explanation:

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Answer 2

Answer:

20.2 × 10¹⁹ N

Explanation:

Given :

Mass of earth = 6 × 10²⁴ kg

Mass of moon = 7.4 × 10²² kg

Distance between them = 3.84 × 10⁵ km = 3.84  × 10⁸ m

We have value of G = 6.7 × 10⁻¹¹ N m² kg⁻²

We have to find force :

We have :

F = G m₁ m₂ / r²

F = ( 6.7 × 10⁻¹¹ ) ( 6 × 10²⁴ ) ( 7.4 × 10²² ) / (  3.84 × 10⁸ )² N

F = 20.2 × 10¹⁹ N

Hence force exerted by the earth on the moon is 20.2 × 10¹⁹ N.