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A cosmic body A moves to the sun with ve...

A cosmic body `A` moves to the sun with velocity `v_(0)`(when far from the sun) and aiming parameter `l`, the arm of the vector `v_(0)`, relative to the centre of the sun. find the minimum distance by which this body will get to the sun. mass of the sum is `M`.

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The correct Answer is:
`r_(min)=(GM_(s)//v_(0)^(2))[sqrt((1+lv_(0)^(2)//GM_(S))^(2)-1]]` .
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