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Problems 4.78 through 4.80 The crates A and B of weight W 50 lb and Wg 75 lb, respectively, are connected by a pulley system. The system is released from rest and friction between A and the horizontal surface is insufficient to prevent slipping. The cables in the pulley system are inextensible, and the coefficient of kinetic friction between the crate A and the horizontal surface is 14 %3D %3D Problem 4.78, If = 0, determine the speed of B after A slides 10 ft. B %3D Problem 4.79 Determine the required value of 4 so that the speed of B is 27 ft/s after it drops 15 ft. Figure P4.78-P4.80 Problem 4.80, If = 0,25, determine the speed of A after B drops 15 ft.

Problems 4.78 through 4.80 The crates A and B of weight W 50 lb and Wg 75 lb, respectively, are connected by a pulley system. The system is released from rest and friction between A and the horizontal surface is insufficient to prevent slipping. The cables in the pulley system are inextensible, and the coefficient of kinetic friction between the crate A and the horizontal surface is 14 %3D %3D Problem 4.78, If = 0, determine the speed of B after A slides 10 ft. B %3D Problem 4.79 Determine the required value of 4 so that the speed of B is 27 ft/s after it drops 15 ft. Figure P4.78-P4.80 Problem 4.80, If = 0,25, determine the speed of A after B drops 15 ft.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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i only need problem 4.80 

Problems 4.78 through 4.80 The crates A and B of weight W 50 lb and Wg 75 lb, respectively, are connected by a pulley system. The system is released from rest and friction between A and the hrizontal surface is insufficient to prevent slipping. The cables in the pulley system are inextensible, and the coefficient of kinetic friction between the crate A and the horizontal surface is A- %3D %3D Problem 4.78 If = 0, determine the speed of B after A slides 10 ft. B Problem 4.79 Determine the required value of 4 so that the speed of B is 27 ft/s after it drops 15 ft. Figure P4.78-P4.80 Problem 4.80, If = 0,25, determine the speed of A after B drops 15 ft.
Transcribed Image Text:Problems 4.78 through 4.80 The crates A and B of weight W 50 lb and Wg 75 lb, respectively, are connected by a pulley system. The system is released from rest and friction between A and the hrizontal surface is insufficient to prevent slipping. The cables in the pulley system are inextensible, and the coefficient of kinetic friction between the crate A and the horizontal surface is A- %3D %3D Problem 4.78 If = 0, determine the speed of B after A slides 10 ft. B Problem 4.79 Determine the required value of 4 so that the speed of B is 27 ft/s after it drops 15 ft. Figure P4.78-P4.80 Problem 4.80, If = 0,25, determine the speed of A after B drops 15 ft.
Problem 4.80 If u = 0.25, determine the speed of A after B drops 15 ft. %3D
Transcribed Image Text:Problem 4.80 If u = 0.25, determine the speed of A after B drops 15 ft. %3D
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