Question

Calculate the escape speed on the surface of a planet of mass `7.5xx10^(25)g`, and radius `1.6xx10^(8)cm. G=6.67xx10^(-8)"dyne"cm^(2)g^(-2)`.

Answer 1

Here `G=7.5xx10^(25)g, R=1.6xx10^(8)cm`
Escape speed `v_(e)=sqrt((2GM)/R)=sqrt(2xx6.67xx10^(-8)x7.5xx10^(25))/(1.6xx10^(8))`