A block of mass is placed on a surface w...

A block of mass is placed on a surface with a vertical cross section given by `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:

`1/3 m`

`1/2 m`

`1/6 m`

`2/3 m`

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