A satellite revolves around the earth in a circular
orbit. What is the work done by the satellite ? Give reason
Answers
Answer:
Work done by the force of gravity (which provides the centripetal force) is zem as the force of gravity acting on the satellite is normal to the displacement of the satellite.
Explanation:
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Explanation:
How Satellites Work
A satellite is basically a self-contained communications system with the ability to receive signals from Earth and to retransmit those signals back with the use of a transponder—an integrated receiver and transmitter of radio signals. A satellite has to withstand the shock of being accelerated during launch up to the orbital velocity of 28,100 km (17,500 miles) an hour and a hostile space environment where it can be subject to radiation and extreme temperatures for its projected operational life, which can last up to 20 years. In addition, satellites have to be light, as the cost of launching a satellite is quite expensive and based on weight. To meet these challenges, satellites must be small and made of lightweight and durable materials. They must operate at a very high reliability of more than 99.9 percent in the vacuum of space with no prospect of maintenance or repair.