Part A To determine the location of her center of mass, a physics student lies on a lightweight plank supported by two scales 2.50 m apart, Find the student's mass. as indicated in the figure (Figure 1). Assume the left scale reads 300 N , and the right scale reads 122 N . View Available Hint(s) AEd m = Figure Submit Part B Find the distance from the student's head to her center of mass. View Available Hint(s) Axis of rotation $2.50 m AE