Question: Find the smallest force P that the worker must apply to the bar CD in order to initiate uphill motion of the homogeneous 8 0

Find the smallest force P that the worker must apply to the bar CD in order to initiate uphill motion of the homogeneous 80-kg spool. The coefficients of static friction are 0.12 at A and 0.36 at B. Neglect the weight of bar CD.
Answer: 153.2 N

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