Recent content by 7m-84

got it

So something like w=mg w=(7.20x10^20)(6.67x10^-11) w=4.669x10^10 then fg=(Gm1m2)/r^2 fg=(6.67x10^-11)(4.669x10^10)(7.20x10^20)/500^2 fg=2.24x10^21 like that?

Homework Statement The asteroid Ceres has a mass of 7x10^20 and a radius of 500km a. what is the gravity on the surface b. How much would a 85kg astronaut weigh in ceres Homework Equations Fg = (Gm1m2)/r^2 The Attempt at a Solution None, where do I get the seccond mass value...