Question

if the radius of the earth is increased by three times then what is the change in acceleration due to gravity​

Answer 1

Explanation:

Weight is nothing but mass multiplied by the gravity on the surface

If Mass of earth is M and radius is r then gravity g=GM/r

2

if we replace r by 3r we wiil get new value of gravity as GM/(3r)

2

=GM/9r

2

=

9

g

as gravity became one ninth so the weight will al