How do i determine the mass of a planet when the radius is 3(10^7) and the gravitational field strength is 8g(N kg^-1)

Question

mos1635 · Answer

g1=G*M1/r^2 for planet
go=G*Me/Re^2 for earth
divide .....supstitude g1=8*go....solve to M1...

anonymous · Answer

pls can we get  a clear solution to this problem @experimentX @shivam_bhalla

experimentx · Answer

M1 = Mass of the planet
r = Radius of the planet
Me = Mass of the Earth
Re = Radius of the Earth
g1 = Gravitational field strength of the planet
go = Gravitational field strength of the earth
These are the variables in the above equation.

anonymous · Answer

G is suppose to be Universal G constant then M1 can be found..then why do we need g1=8*go

experimentx · Answer

makes things much more faster!!!

anonymous · Answer

u mean g1 for any planet is 8times that of earth?

experimentx · Answer

yeah ... that what the question says. and you know the radius of earth.