Q) What\'s the difference b/w two questions? please show works and answers A sat

Question

Q) What's the difference b/w two questions? please show works and answers
A satellite with a mass of 2830 kg is placed in orbit, beyond the Earth atmosphere, at a distance of 13020 km from the Earth surface.
1)What was the weight of the satellite when it was near the Earth surface, before being launched?
2)When the satellite is in orbit, what is then the intensity of the gravitational force exerted by the Earth on the satellite?
(Equatorial radius of the Earth: 6.378×10^6 m
Mass of the Earth: 5.972×10^24 kg
Gravitational constant: 6.674×10^-11 Nm2/kg2
Gravitational acceleration: 9.81 m/s2)

Explanation / Answer

(a) weight of satellite = mg = 2830*9.8 = 27734 N (b)gravitational force = GMm/(R+h)^2 = 6.674×10^-11 * 5.972×10^24 * 2830/(1.9398*10^7)^2 = 2997.2 N

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