Physics

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Some communication satellites are put into a circular geosynchronous orbit in which the satellite remains above a certain position on the earth's equator as it orbits. Such a satellite would always be in the same position in the sky as seen from the transmitting or receiving equipment of a communications broadcasting network.

A) Find the angular speed (in rad/s) of the satellites orbit necessary for it to remain above the some point of the equator.

B) What must be the orbital radius of such a satellite?

C) What minimum speed must be given to such a satellite to launch it from the surface of the earth and place it in such an orbit? Neglect friction and any rotational effects of the earth.

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