Question

the distance between earth and moon radius is 3.84×10 ki power 8 m. what is the magnitude of gravitational force each exerts on the other.​

Answer 1

Explanation:

Let at the point P the net gravitational force be zero.

Let,M=mass of the Earth

m=mass of the moon

m

′ =mass of the object

M=81cm (given)

(R−r)

2Gmm ′

= r 2Gmm '

=> (R−r) 281 = r21

=> {(3.8×10 5 )−r} 2

81 =r21

Solving,we get ,r=3.8×10 7m