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A block of mass 40kg slides over a surf...

A block of mass 40kg slides over a surface, when a mass of 4kg is suspended through an inextensible massless string passing over frictionless pulley as shown below. The coefficient of kinetic friction between the surface and block is 0.02. The acceleration of block is. (Given `g= 10 ms^(-2)`).

A

`1 ms^(-2)`

B

`1//5 ms^(-2)`

C

`4//5 ms^(-2)`

D

`8//11 ms^(-2)`

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