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The International Space Station has a mass of 419,455 kg. When the station
orbits at an altitude of 330,000 m, what is the approximate gravitational force
on the Station due to Earth's gravity? (Recall that Earth has a radius of 6.37 x
106 m, it has a mass of 5.97 x 1024 kg, and G = 6.67 x 10-11 N·m2/kg2)
A. 3.1 x 106 N.
O B. 3.7 x 106N
C. 3.4 x 106N
O D. 2.9 x 100N
Answer is B When you use the formula of gravitational force provided by the earth to the ISS from Newton’s universal law of gravitation, (Fg=GMeM/Rt^2), then add all the given data, you will get your answer, but Rt=average distance from the surface of the earth to the ISS + the radius of the earth, since gravitational force is a central force
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