railway RRB Technician Grade 3 Mock Test 2024 Physics Gravitation Acceleration due to gravity of the earth
If R is the radius of a planet, g is the acceleration due to gravity, then the mean density of the planet is given by:
1
3 g/4πGR
2
3 gG/4πR
3
4 πgR/3G
4
4 πGR/3g