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A rough vertical board has an accelerati...


A rough vertical board has an acceleration `a` so that a 2 kg block pressing against it dows not fall. The coefficient of friction between the block and the board should be

A

`gt g//a`

B

`ltg//a`

C

`=g//a`

D

`gtag`

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The correct Answer is:
A
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TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (CRITICAL THINKING)
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  2. Wooden block of weight W(1) is kept on a horizontal surface. A pan is ...

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  3. A rough vertical board has an acceleration a so that a 2 kg block pres...

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  4. A block of mass m lying on a rough horizontal plance is acted upon by ...

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  6. The pressure at a point in a fluid is independent of "".

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