Question

The radius of the planet venus is nearly the same of that of the eart but it's mass is only 80% that of the earth. If an object weighs We on the earth
(a) what does it weigh on venus
(b) calculate the value of g in venus

Answer 1

F = G M m /d^2
g = F/m = G M/d^2
on surface d is radius R
so
9.81 = G Me /R^2
gv = GMv /R^2 = G (.8Me)/R^2 = .8* 9.81

them Wv = m gv = .8 We

Answer 2

I need the full problem to be solved

Answer 3

Just take note thatbthe mass is same everywhere.