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The diagram shows a rough plank resting ...

The diagram shows a rough plank resting on a cylinder with one and of the plank on rough ground. Negtect friction between plank and cylinder. Draw digrams to show
(a) the force acting on the plank,
(b)the force acting on the cylinder.

Text Solution

Verified by Experts

`w_(1) =` weight of cylinder
`w_(2) =` weight of plank
`N_(1) =` normal reation between cyclinder and plank
`N_(2) =` normal reation on cyclinder from ground
`N_(3) =` normal reation on plank from ground `f_(1) =` force of friction on cyclinder from ground `f_(2) =` force of friction on plank from ground
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Knowledge Check

  • A force F is applied horizontally on a cylinder in the line of centre as shown in the figure. The cylinder is on a rough surface of coefficient of fricition mu . The direction of the friction force acting on the cylinder will be

    A
    in the direction of F
    B
    zero
    C
    in opposite direction of F
    D
    can not be ascertained

  • A plank of mass 2 kg and length 1 m is placed on horizontal floor.A small block of mass 1 kg is placed on top of the plank , at its right extreme end .The coefficient of friction between plank and floor is 0.5 and that between plank and block is 0.2 . If a horizontal force = 30 N starts acting on the plank to the right ,the time after which the block will fall off the plank is (g = 10 ms^(-2))

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