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A uniform solid cylinder having height l...

A uniform solid cylinder having height `l` and diameter `d` is placed on a rough horizontally plank which is being pulled horizontal with an acceleration. Find the maximum value of the acceleration for which the cylinder remain in equilibrium

A

`(gd)/(l)`

B

`(gd)/(2l)`

C

`(gl)/(d)`

D

`(gl)/(2d)`

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