A rope attached to a 35-lb crate passes around two fixed pegs as shown below. Th

Question

A rope attached to a 35-lb crate passes around two fixed pegs as shown

below. The 45-lb crate is attached to a wall by a second cord. The coefficient

of friction between the two crates is 0.25; between the crate and the floor is

0.25; and between the rope and the pegs is 0.2. Determine the minimum

force Pmin that must be used to cause motion.

A rope attached to a 35-lb crate passes around two fixed pegs as shown below. The 45-lb crate is attached to a wall by a second cord. The coefficient of friction between the two crates is 0.25; between the crate and the floor is 0.25; and between the rope and the pegs is 0.2. Determine the minimum force Pmin that must be used to cause motion.

Explanation / Answer

58 lb

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