By definition we have to:
F = G * M * m / r ^ 2
where,
F = Gravitational force
G = Gravitational constant. (6.67 x 10 ^ -11 Nm ^ 2 / kg ^ 2)
M = mass of the earth
m = mass of the object
r = radius of the earth
If the earth were six times as massive as it is:
M = 6M
radius were three times its present value:
r = 3r
We have the equation is:
F = G * (6M) * m / (3r) ^ 2 = (6/9) * (G * M * m / r ^ 2) = (2/3) * (G * M * m / r ^ 2 )
Therefore the weight will be
(2/3) * F = (2/3) * (730) = 487N
answer
Your weight will be 487N
