8–4 Friction (Chapter 8: Hibbeler Statics) Benam Academy

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ENGINEERING MECHANICS - STATICS, 13TH EDITION, R. C. HIBBELER
CHAPTER 8: Friction
PROBLEM: 8–4
*8–4. The tractor has a weight of 4500 lb with center of gravity at G . The driving traction is developed at the rear wheels B , while the front wheels at A are free to roll. If the coefficient of static friction between the wheels at B and the ground is ms = 0.5, determine if it is possible to pull at P = 1200 lb without causing the wheels at B to slip or the front wheels at A to lift off the ground.
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