Question

Mass of the earth is 16 into 10 raise to 24 kg and the moon of is 7.4 into 10 raise to 22 Kg if the distance between the Earth and the Moon be 3.84 into 10 raise to 5 kilometre calculate the force exerted by the Earth on the moon( Z is equal to 6.7 into 10 raise to minus 11 and and raised to 2 kg raised to minus 2

Answer 1

The distance between the earth and the moon is,

r = 3.84 x 105 m

= 3.84 x 105 x 1000 m

= 3.84 x 108 m

The value of G = 6.7 x 10-11 Nm2 kg-2

The force exerted by the earth on the moon is,





Thus the force exerted by the earth on the moon is 2.01 x 1020 N.

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.