Question 1119344
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The force due to gravity on a man is proportional to his mass and inversely proportional to the square of his distance 
from the centre of the Earth. If a man weighs 90kg and the radius of the Earth is 6.4 x 10^6 metres, the force acting on him 
is 8 x 10^-4 Newton. Find the force acting on a man weighing 80kg when he is in a satellite 1 million metres above the surface of the Earth
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The weight of the mass of &nbsp;90 kg &nbsp;at the Earth surface &nbsp;<U>IS &nbsp;NOT</U>  &nbsp;8 x 10^(-4) Newton.



At the Earth surface, &nbsp;the mass of &nbsp;90 kg &nbsp;weights about &nbsp;9*10^2 newtons  



&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(Weight = mass * 9.81 m/s^2,  &nbsp;&nbsp;or, &nbsp;approximately, &nbsp;&nbsp;90*10 = 9*10^2 newtons).



Your input is &nbsp;<U>FATALLY &nbsp;INCORRECT</U> &nbsp;and shows that your knowledge of Physics is about zero.



I really don't know what to discuss with the person who does not know basics (and posts incorrect assignments).



I only can advise him to take a Physics textbook and to read the chapter "Forces".