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Two crates, of mass 65 kg and 125 kg, are in contact and at rest on a horizontal surface (Fig. 4-57). A 650-N force is exerted on the 65−kg crate. If the coefficient of kinetic friction is 0.18 , calculate (a) the acceleration of the system, and (b) the force that each crate exerts on the other. (c) Repeat with the crates reversed. FIGURE 4-57 Problem 49.

Two crates, of mass 65 kg and 125 kg, are in contact and at rest on a horizontal surface (Fig. 4-57). A 650-N force is exerted on the 65−kg crate. If the coefficient of kinetic friction is 0.18 , calculate (a) the acceleration of the system, and (b) the force that each crate exerts on the other. (c) Repeat with the crates reversed. FIGURE 4-57 Problem 49.

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  1. (II) Two crates, of mass 65 k g and 125 k g , are in contact and at rest on a horizontal surface (Fig. 4-57). A 650-N force is exerted on the 65 − k g crate. If the coefficient of kinetic friction is 0.18 , calculate ( a ) the acceleration of the system, and (b) the force that each crate exerts on the other. (c) Repeat with the crates reversed. FIGURE 4-57 Problem 49.

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