PROBLEM 7: In the figure, µ = 0.30 for the contact of the 80-kg crate and the ground. Pulleys are frictionless. (a) determine the value of 0 to move the crate (b) Determine the tensile force (in N) in the rope attached to the crate to move the crate. (c) Determine the smallest force (in N) the man must exert on the rope to move the crate. 30°/ 45°

PROBLEM 7: In the figure, µ = 0.30 for the contact of the 80-kg crate and the ground. Pulleys are frictionless. (a) determine the value of 0 to move the crate (b) Determine the tensile force (in N) in the rope attached to the crate to move the crate. (c) Determine the smallest force (in N) the man must exert on the rope to move the crate. 30°/ 45°

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 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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