Question

the mass of the earth is 6*10^24kg and thtthe moon is 7·4*10^24 km. if the distance between earthband the moon is3·84*10^5km calculate the force exerted by the moon . G is equal to 6.7 x 10 ^11 N m^2kg^2

Answer 1

Answer:

170.496*10^43

Explanation:

f=m1*m2/d sq

put the numbers now and divide

6*7.4*10^48/3.84*10^5

=170.496*10^(48-5)

=170.496*10^43

Mass is given so value of G would not be needed. It is relevant when we want to find weight of given mass.

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.