Question

If the density of the earth is doubled to that of its original value, the radius remaining
the same, what will be the change in acceleration due to gravity?

TNSCERT Class 10 Physics Ch 15 Laws of Motivation and Gravitation

Answer 1

The density of earth is doubled.
The radius of the earth is constant.
Density of the earth=5.51 g/m^3
Density of the earth is doubled= 5.51*2
=11.02 g/m^3
Then,
the acceleration due to gravity = 9.8*2
=19.6 ms^-2