Er; Three crates with various contents are pulled by a force Fpull = 3575 N across a horizontal, frictionless rollerconveyor system. E The group of boxes accelerates at 1.578 mfs2 to the right. Between each adjacent pair of boxes is a force meter that measures the magnitude of the tension in the connecting rope. Between the box of mass m j and the box of mass mg, the force meter reads Fl; 2 138] N. Between the box of mass m: and the box ofmass mg. the force meter reads F3 = 22?3 N. Assume that the ropes and force meters are massless. E Macmillan Lea What is the total mass of the three boxes? What is the mass of each box