Question

the mass of the earth is 6*10²⁴kg and that of the moon is 7.4*10²²kg. If the distance between the earth and the moon be 3.84*10⁵km, calculate the force exerted by the earth on the moon. (G=6.7*10¹¹)​

Answer 1

Answer:

F=  

R  

2

 

GM  

e

​  

M  

m

​  

 

​  

 

F=  

(3.84×10  

8

)  

2

 

6.7×10  

−11

×6×10  

24

×7.4×10  

22

 

​  

 

=  

(3.84)  

2

×10  

16

 

297.48×10  

−11+24+22

 

​  

 

=20.17×10  

19

 

=2.017×10  

20

 N

Explanation:

Answer 2

Answer:

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

Explanation: