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You need to move a cubic crate across a rough floor. You pull the crate horizontally using a rope with force F, as shown in
You need to move a cubic crate across a rough floor. You pull the crate horizontally using a rope with force F, as shown in Figure 1. The weight of the crate is 700 1by, its density is 180 1bm/fts, and the coefficient of static friction between the crate and the floor is 0.57. Write an expression for the maximum static friction force fmax (in 1b) as a function of the mass m of the crate. Use Excel to plot fmax( m). Calculate the average pressure of the crate on the floor, in psi. . Calculate the minimum force F necessary for the crate to start moving, in lb F
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