A bedroom bureau with a mass of 38 kg, including drawers and clothing, rests on the horizontal floor. The coefficients of friction between the bureau and the floor are 0.45for static and 0.35 for kinetic. You pull on the bureau with a force 447 N at 20° above the horizontal. The bureau initially moves along the floor in the same general direction as you pull.
(a) What is the maximum static friction force on the bureau (before it begins to move)?
(b) What is the acceleration of the bureau once it is in motion?