JEE Main 2019 Physics question
Two stars of masses kg each, and at distance m rotate in a plane about their common centre of mass O. A meteorite passes through O moving perpendicular to the star's rotation plane. In order to escape from the gravitational field of this double star, the minimum speed that meteorite should have at O is: (Take Gravitational constant; G = Nm kg)
Answer: (D)
Solution
with r = m ⇒ m/s.