Question

14) A planet X is such that its mass is double of earth and radius is half of that of earth Fin
value of 'g' on this planet​

Answer 1

Answer:

Earth's gravitational acceleration , g=GMR2

g1=GM1R21andg2=GM2R23

g2g1=(M2M1)(R1R2)2=2(2)2=8

g2=8g1 Thus , the value of g on the surface of the earth would be eight times the present value.

Explanation:

This gives you the required scaling law for the surface gravity on a spherical planet. The answer is 2638.95 kms.