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A communications satellite with a mass of 450 kg is in a circular orbit about the Earth. The radius of the orbit is 2.9×10^4 km as measured from the center of the Earth.

Calculate the weight of the satellite on the surface of the Earth
Calculate the gravitational force exerted on the satellite by the Earth when it is in orbit.

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  1. weight on Earth: mass*g

    forceinorbit= g*mass*(re/(rorbit))^2

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