Question: If ? = 30 o , determine the minimum coefficient of static friction at A and B so that the roller remains self-locking, regardless of

If ? = 30^o, determine the minimum coefficient of static friction at A and B so that the roller remains self-locking, regardless of the magnitude of force P applied to the belt. Neglect the weight of the roller and neglect friction between the belt and the vertical surface.

30 mm

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