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The masses and radii of the earth an moo...

The masses and radii of the earth an moon are `M_(1) and R_(1) and M_(2), R_(2)` respectively. Their centres are at a distacne r apart. Find the minimum speed with which the particle of mass m should be projected from a point mid-way between the two centres so as to escape to infinity.

A

`(G(M_(1)+M_(2)))/(d)`

B

`2sqrt((G(M_(1)+M_(2)))/(d))`

C

`sqrt((Gd)/(M_(1)+M_(2)))`

D

`sqrt((M_(1)+M_(2))/(Gd))`

Text Solution

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The correct Answer is:
B
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