JEE Main Physics question
Two satellites and revolve around a planet in coplanar circular orbits in the same sense, with periods of revolution h and h respectively. The radius of the orbit of is km. When is closest to , the angular speed of as actually observed by an astronaut in is **[IIT JEE 1986]**
Answer: (B)
Solution
By Kepler's third law, km. Angular speeds are rad/h and rad/h. At closest approach , and the planet are collinear, so both velocities are purely tangential (perpendicular to
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