L = 10' 4. A P- 400 lb 7771 A uniform bar AB, 10ft long and weighing 280lb, is hinged at B and rests upon a 400lb block at A as shown. If the coefficient of friction is 0.40 at all contact surfaces, find the horizontal force P required to start moving the 400 Ib block.

L = 10' 4. A P- 400 lb 7771 A uniform bar AB, 10ft long and weighing 280lb, is hinged at B and rests upon a 400lb block at A as shown. If the coefficient of friction is 0.40 at all contact surfaces, find the horizontal force P required to start moving the 400 Ib block.

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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The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.

Question

B
L= 10'
A
400 lb
77
A uniform bar AB, 10ft long and
weighing 280lb, is hinged at B and rests
upon a 400lb block at A as shown. If the
coefficient of friction is 0.40 at all
contact surfaces, find the horizontal
force P required to start moving the 400
Ib block.

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