The drum has a mass of 25 kg. The coefficient of static friction between the drum and brake bar is ?s = 0.4. Neglect the weight and thickness of the brake bar. (Figure 1) If the moment M = 26 N?m , determine the smallest force P that needs to be applied to the brake bar in order to prevent the drum from rotating.

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Express your answer to three significant figures and include the appropriate units.

Part B

Determine the corresponding x and y components of reaction at pin O.

Express your answers using three significant figures separated by a comma.

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