8-25. The crate has a weight of W = 150 lb, and the coefficients of static...

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8-25. The crate has a weight of W = 150 lb, and the coefficients of static and kinetic friction are , = 0.3 and k 0.2, respectively. Determine the friction force on the floor if 30 and P=200 lb. = = 8-26. The crate has a weight of W = 350 lb, and the coefficients of static and kinetic friction are , = 0.3 and k =0.2, respectively. Determine the friction force on the floor if = 45 and P 100 lb. 8-27. The crate has a weight W and the coefficient of static friction at the surface is =0.3. Determine the orientation of the cord and the smallest possible force P that has to be applied to the cord so that the crate is on the verge of moving. 8-25. The crate has a weight of W = 150 lb, and the coefficients of static and kinetic friction are , = 0.3 and k 0.2, respectively. Determine the friction force on the floor if 30 and P=200 lb. = = 8-26. The crate has a weight of W = 350 lb, and the coefficients of static and kinetic friction are , = 0.3 and k =0.2, respectively. Determine the friction force on the floor if = 45 and P 100 lb. 8-27. The crate has a weight W and the coefficient of static friction at the surface is =0.3. Determine the orientation of the cord and the smallest possible force P that has to be applied to the cord so that the crate is on the verge of moving.