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Two particles 1 and 2 are allowed to des...

Two particles `1` and `2` are allowed to descend on the two frictionless chord `OA` and `OB` of a vertical circle, at the same instant from point `O`. The ratio of the velocities of the particles `1` and `2` respectively, when they reach on the circumference will be (OB is the diameter).

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`OA=dcosalpha,a_(OA)=gcosalpha`
Along `OA rArr V_(A)^(2)=2(gcosalpha)(dcosalpha)`
Along `OB V_(B)^(2)=2gd rArr V_(A)/V_(B)=cosalpha`
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