A CD case slides along a floor in the positive direction of an x axis while an applied force Fa acts on the case. The force is directed along the x axis and has the x component Fax = 9x – 3x2, with x in meters and Fax in Newton’s. The case starts at rest at the position x = 0, and it moves until it is at rest.
(a) Plot the work Fa does on the case as a n of x.
(b) At what position is the work maximum, and
(c) What is that maximum value?
(d) At what position has the work decreased to zero?
(e) At what position is the case again at rest?