Tire tractor has a weight of 4500 lb with center of gravity at G. The driving traction is...

Tire 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 μs = 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.