The bob of a simple pendulum (mass m and length l ) dropped from a horizontal position strikes a block of the same mass elastica

The bob of a simple pendulum (mass m and length l ) dropped from a horizontal position strikes a block of the same mass elastically placed on a horizontal frictionless table. The K.E. of the block will be
A. 2 mgl
B. mgl 2
C. mgl
D. 0

The bob of a simple pendulum (mass m and length l ) dropped from a horizontal position strikes a block of the same mass elastically placed on a horizo

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