A block of mass 'm' is placed on a rough...

A block of mass `'m'` is placed on a rough surface with a vertical cross section of `y =(x^(3))/(6)`. If the coefficient of friction is `0.5`, the maximum height above the ground at which the block can be placed without slipping is .

`frac(1)(6)m`

`frac(2)(3)m`

`frac(1)(3)m`

`frac91)(2)m`

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