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JEE Advanced Model Paper 7 with solutions for online practice

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Question : 6 of 66

Marks: +1, -0

Two satellites A and B of equal mass m, moving in same circular orbit about earth, but inopposite sense as shown. The radius of orbit is ‘r’. The satellites undergoes a collision which isperfectly in-elastic. For this situation, mark out the correct statement(s).(Take mass of earth as ‘M’)

The total energy of the two satellites plus earth system just before collision is
−GMm
r
The total energy of the two satellites plus earth system just after collision is
−2GMm
r
The total energy of two satellites plus earth system just after collision is
−GMm
2r
The combined mass (two satellites) will fall towards the earth just after the collision.

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