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A light satellite is initially rotating around a planet in a circular orbit of radius r. Its speed in this circular orbit was u_(0). It is put in an elliptical orbit by increasing its speed form u_(0) " to " v_(Q) ( instantaneously). In the elliptical orbit, the satellite reaches the farthest point P, which is at a distance R from the planet. Satellite's speed at farthest point is v_(P). At point Q, the speed required by satellite to escape the planet's gravitational pull is v_("esc") |
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Answer» `v_("ESC")=2u_(0)` |
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