Question

When the distance between two bodies of masses m, and m, is tripled. Then the gravitational force
between them becomes
a)1 by8 times
b) 1by6 times
c) 1by3 times
d) 1by9 times
​

Answer 1

Answer:

c. 1by3 times

explaination

because mass have one unit and it gets trippled means 1 by 3 times

Answer 2

Answer:

d

Explanation:

according to Newton's Law of Gravitation,

F=Gm1m2/r^2

m1=m2=m

so , F=Gm^2/r^2

now,

r becomes 3r

so F= Gm^2/(3r)^2

F=Gm^2/9r^2

= 1/9(Gm^2/r^2)

1/9/times