physics(please help)

there's a bowl and inside it there's a stick that's the same distance as the radius. There's also "mu" on both sides of the stick. how would you calculate "mu" so it won't slip. using up=down right=left and clockwise=counter clockwise. The answer should be "mu"=(15^.5)-(2(3^.5))

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  1. I don't get the picture. What do you mean by the "distance" of the stick? Where is it supported inside the bowl? What is the shape of the bowl?

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