weight = m g
so
g = weight/m = 550/75 = 7.33 m/s^2
just for kicks, compute earth radius now
7.33 / 9.81 = Re^2/(Re+8000)^2
.8646 = Re/(Re + 8000)
.8646 Re + 6917 = Re
.1354 Re = 6917
Re = 51086 meters
I do not think so. Maybe you mean 80 km ?
The weight of a 75 kg body, 8km above earth surface is 550 Newton. Calculate the gravitational strength at that height
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