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1. The coefficient of static friction µ,s between the 100-lb body and the 15° wedge is 0.20. Determine the magnitude of the force P required to begin raising the 100-lb body if (a) rollers of negligible friction are present under the wedge, as illustrated, and (b) the rollers are removed and the coefficient of static friction µ,s = 0.20 applies at this surface as well.

1443_Determine the coefficient of static friction.png

2. The coefficient of static friction for both wedge surfaces is 0.40 and that between the 27-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block up the incline. Neglect the weight of the wedge.

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Mechanical Engineering, Engineering

Category:- Mechanical Engineering
Reference No.:- M91603271

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