Question

if acceleration due to gravity on a planet is 6.67m/s and its radius is 4*10to the power 6 then the mass of the planet is​

Answer 1

Acceleration due to gravity

g is proportional to M/R²

Here mass is same as earth.so

g proportional to1/R²

gR²=g¹(R/2)²

Then g¹=4g.