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| 1. |
An artificial satellite revolves it’s orbit around the earth without using any fuel. But an aeroplane requires fuel to fly off at a certain height, Why so ? |
| Answer» Solution :It is given that `V_0=1//2V_e SQRT((GM)/(R+h)=1//2sqrt((2GM)/R)THEREFORE(GM)/(R+h)=^1//4 (2GM)/R=(GM)/(2R)therefore 2R=R+h` | |