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Three blocks A, B and C, whose masses ar...

Three blocks `A`, `B` and `C`, whose masses are `9kg`, `9kg` and `18kg` respectively as shown in the figure, are released from rest. The co-efficient of friction between block `A` and the horizontal surface is `0.5` & the co-efficient of friction between block `B` and the horizontal surface is `0.5`. Find the acceleration of block `C` just release [Take `g=10m//s^(2)`]. All strings and pulleys are ideal

A

`(30)/(9)m//s^(2)`

B

`(50)/(9)m//s^(2)`

C

`(70)/(9)m//s^(2)`

D

`(80)/(9)m//s^(2)`

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Knowledge Check

  • A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5m//s^2 , the frictional force acting on the block is…………newtons.

    A
    10N
    B
    5N
    C
    2.5N
    D
    20N

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