Q1: The tractor has a weight of 4500 lb with center ofgravity at G. The driving traction is developed at the rearwheels B, while the front wheels at A are free to roll. If theQ2: The mine car and its contents have a total mass of9 Mg and a center of gravity at G. If the coefficient of staticfriction between the wheels and the tracks is u, = 0.4 whenthe wheels are locked, find the normal force acting on thecoefficient of static friction between the wheels at B and theground is u, = 0.5, determine if it is possible to pull atP = 1350 lb without causing the wheels at B to slip or thefront wheels at A to lift off the ground.front wheels at B and the rear wheels at A when the brakesat both A and B are locked. Does the car move?10 kN0.9 mG0.15 m3.5 ft1.25 ft0.6 m-4 ft-1.5 m-2.5 ft

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QI: The tractor has a weight of 4500 Ib 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 u, = 0.5, determine if it is possible to pull at P = 1350 lb without causing the wheels at B to slip or the front wheels at A to lift off the ground.

QI: The tractor has a weight of 4500 Ib 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 u, = 0.5, determine if it is possible to pull at P = 1350 lb without causing the wheels at B to slip or the front wheels at A to lift off the ground.

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 7.23P: The 40-lb spool is suspended from the hanger GA and rests against a vertical wall. The center of...

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