Part A The 190-kg crate rests on the ground for which the coefficients of static and kinetic friction are u, = 0.5 and ug = 0.4 , respectively. The winch delivers a honzontal towing force T to its cable at A which varies as shown in the graph. Originally the tension in the cable is zero. (Eigure 1) Determine the speed of the crate when t = 3.9 s Hint: First determine the force needed to begin moving the crate. Express your answer to three significant figures and include the appropriate units. ? Value Units Submit Request Answer Figure < 1 of 1 > Provide Feedback T(N) 800 T 400 A (s) AT

Part A The 190-kg crate rests on the ground for which the coefficients of static and kinetic friction are u, = 0.5 and ug = 0.4 , respectively. The winch delivers a honzontal towing force T to its cable at A which varies as shown in the graph. Originally the tension in the cable is zero. (Eigure 1) Determine the speed of the crate when t = 3.9 s Hint: First determine the force needed to begin moving the crate. Express your answer to three significant figures and include the appropriate units. ? Value Units Submit Request Answer Figure < 1 of 1 > Provide Feedback T(N) 800 T 400 A (s) AT

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 7.71P: The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If...

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