A) The forklift and operator have a combined weight of 10000 lb and a center of gravity at G. If the forklift is used to lift the 2000-lb concrete pipe, find the normal reactions on each of its four wheels if the pipe is given an upward acceleration of 4 ft/s2.
B) The forklift and operator have a combined weight of 10000 lb and a center of gravity at G. If the forklift is used to lift the 2000-lb concrete pipe, find the maximum vertical acceleration it can give to the pipe so that it does not tip forward on its front wheels.