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# Two stars of masses 3×1031 kg each, and at distance 2×1011 m rotate in a plane about meteorite passes through O moving perpendicular to the star's rotation plane. In order to escape from the gravitation field of this double star, the minimum speed that meteorite should have at O is:(Take Gravitational constant G=6.67×10−11Nm2Kg−2)3.8×104m/s1.4×105m/s2.4×104m/s2.8×105m/s

A
3.8×104m/s
B
1.4×105m/s
C
2.8×105m/s
D
2.4×104m/s
Solution
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Q1
Two stars of masses 3×1031 kg each, and at distance 2×1011 m rotate in a plane about meteorite passes through O moving perpendicular to the star's rotation plane. In order to escape from the gravitation field of this double star, the minimum speed that meteorite should have at O is:
(Take Gravitational constant G=6.67×1011Nm2Kg2)
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