A flexible chain of length L=20 sqrt(2) ...

A flexible chain of length `L=20 sqrt(2)` m and weight W=10 kg in initially placed at rest on a smooth frictionless wedge surface ABC. It is given a slight jerk on one side so that it will start sliding on the side. Find the speed of the chain when its one end will leave the vertex of the wedge `(Take g=10m//s^(2))`

`10 sqrt(2)m//s`

`10 m//s`

`4 m//s`

`(10sqrt(2))^(1//2)`

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