Question

By what factor would your weight change if Earth's diameter were tripled and its mass were tripled?

Answer 1

Wt become`1/2`

Explanation:

The gravity g of earth is`(GM)/r^2`
if the parameters are doubled , the gravity would be

`(G(2M))/((2r)^2)= (2GM)/ (4r^2)= (1/2*GM)/(r^2 )`

the gravity changed to half so the weight reduces to half !