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)Artificial satellites are used to monitor weather conditions on Earth, for surveillance and for communications. Such satellites may be placed in a geo-synchronous orbit in a low polar orbit Describe the properties of the geo-synchronous (or geo-stationary) orbit and the advantages it offers when a satellite is used for communications B)A satellite of mass m travels at angular speed coin a circular orbit ata height h above the surface of a planet of mass M and radius R. b i)Using these symbols, give an equation that relates the gravitational force on the satellite to the centripetal force. b ii)Use your equation from part (b)(i) to show that the orbital period, T, of the satellite is given by : T^2=(4π^2)/GM * (R/h)^3 b iii)Explain why the period of a satellite in orbit around the Earth cannot be less than 85 minutes. Your answer should include a calculation to justify this value. Mass of the Earth = 6.4 x 10^24 kg and the radius of the Earth = 6.4 x 10^6 m. C) Describe and explain what happens to the speed of a satellite when it moves to an orbit that is closer to the Earth.

)Artificial satellites are used to monitor weather conditions on Earth, for surveillance and for communications. Such satellites may be placed in a geo-synchronous orbit in a low polar orbit Describe the properties of the geo-synchronous (or geo-stationary) orbit and the advantages it offers when a satellite is used for communications B)A satellite of mass m travels at angular speed coin a circular orbit ata height h above the surface of a planet of mass M and radius R. b i)Using these symbols, give an equation that relates the gravitational force on the satellite to the centripetal force. b ii)Use your equation from part (b)(i) to show that the orbital period, T, of the satellite is given by : T^2=(4π^2)/GM * (R/h)^3 b iii)Explain why the period of a satellite in orbit around the Earth cannot be less than 85 minutes. Your answer should include a calculation to justify this value. Mass of the Earth = 6.4 x 10^24 kg and the radius of the Earth = 6.4 x 10^6 m. C) Describe and explain what happens to the speed of a satellite when it moves to an orbit that is closer to the Earth.

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A)Artificial satellites are used to monitor weather conditions on Earth, for
surveillance and for communications. Such satellites may be placed in a
geo-synchronous orbit in a low polar orbit

Describe the properties of the geo-synchronous (or geo-stationary) orbit and the advantages it offers when a satellite is used for communications


B)A satellite of mass m travels at angular speed coin a circular orbit ata
height h above the surface of a planet of mass M and radius R.


b i)Using these symbols, give an equation that relates the gravitational
force on the satellite to the centripetal force.


b ii)Use your equation from part (b)(i) to show that the orbital period,
T, of the satellite is given by :

T^2=(4π^2)/GM * (R/h)^3


b iii)Explain why the period of a satellite in orbit around the Earth
cannot be less than 85 minutes. Your answer should include a calculation
to justify this value. Mass of the Earth = 6.4 x 10^24 kg and the radius of the
Earth = 6.4 x 10^6 m.

C) Describe and explain what happens to the speed of a satellite when it
moves to an orbit that is closer to the Earth.

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