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In the given figure, the block of mass m...

In the given figure, the block of mass m is dropeed from the point 'A'. The expression for kinetic energy of block when it reaches point 'B' is

A

`(1)/(2) mg y_(6)^(2)`

B

`(1)/(2) mg y^(2)`

C

`mg (y- y_(0))`

D

`mgy_(0)`

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