Question

The radius of the planet Venus is nearly the same as that of the earth, but its mass is only 80% that of the earth. If an object weighs W on the earth, what does it weigh on Venus? Calculate the value of 'g' on Venus

Answer 1

Whats is g? Since W = mg,
g(earth) = GM/r^2 = 9.81 m/s^2
g(venus) = G(0.8M)/r^2 = 0.8 * GM/r^2 = 0.8 * 9.81

Answer 2

What does weigh on venus