The gravity of a black hole is so strong that not even light can escape from within its surface or “event hori?
zon.” Even outside that surface, enormous energies are needed to escape. Suppose that you are 7 km away from the center of a black hole that has a mass of 1031 kg. If your mass is 71 kg, how much do you weigh?
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W=m*a = 71*a
a = (Gm1/r^2)
= 10^31G/7*10^3 =
(G/7)*10^28
W = 71*(G/7)*10^28 =
approx. (G)10^29
approx. 71(10^-11)(10^29) = 71*10^17 N
... if i was 7km away from a black hole, that would be that last thing i would think about