An Atwood machine comprises of a 475 g mass and the other heavier mass. A student sets up the machine having 475 g mass on the floor and the other mass hanged a distance of 1.38 m above the floor. The student lets go of the other mass and views that it takes 1.65 seconds for the mass to reach the floor. Determine the acceleration of the system and the second mass? Determine the tension in the string?