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The least coefficient of friction for an...

The least coefficient of friction for an inclined plane inclined at an angle `alpha` with horizontal, in order that a solid cylinder will roll down it without slipping ?

A

⅔ `tan alpha`

B

⅓ `tan alpha`

C

⅖ `tan alpha`

D

⅘ `tan alpha`

Text Solution

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The correct Answer is:
b
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