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A block of mass of 20kg is set into moti...

A block of mass of `20kg` is set into motion on a frictionless horizontal surface with the help of massless smooth pulley and rope as shown in figure.Find the acceleration of the pulley.jpg

A

`5m/s^(2)`

B

`1.25m/s^(2)`

C

`1.5m/s^(2)`

D

`1m/s^(2)`

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