A worker is pulling down the rope as shown.If the pulleys in the system are frictionless, andthe coefficient of static friction between thecrate and the floor is ?? = 0.3, determine thesmallest force the worker must exert on therope in order to move the 100 kg crate, and theangle ? at this moment. 4) A worker is pulling down the rope as shown.If the pulleys in the system are frictionless, andthe coefficient of static friction between the3540°crate and the floor is µs = 0.3, determine thesmallest force the worker must exert on therope in order to move the 100 kg crate, and theangle 0 at this moment.

Let us draw the free body diagram of the pulley Free body diagram of crate

4) A worker is pulling down the rope as shown. If the pulleys in the system are frictionless, and the coefficient of static friction between the 35 40° crate and the floor is µs = 0.3, determine the smallest force the worker must exert on the rope in order to move the 100 kg crate, and the angle 0 at this moment.

4) A worker is pulling down the rope as shown. If the pulleys in the system are frictionless, and the coefficient of static friction between the 35 40° crate and the floor is µs = 0.3, determine the smallest force the worker must exert on the rope in order to move the 100 kg crate, and the angle 0 at this moment.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.62P: The 120-kg block A is suspended from a rope that runs around the fixed pegs B and C. The coefficient...

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