Problem 2: A laboratory cart (m₁ = 500 g) is pulled horizontally across a level track by a lead weight (m2 = 25 g) suspended vertically off the end of a pulley as shown in the diagram below. (Assume the string and pulley contribute negligible mass to the system and that friction is kept low enough to be ignored.) physics.info cart (m1) string track pulley If the lead weight falls 85 cm, determine... a. the final speed of the system b. the acceleration of the system C. the tension in the string suspended mass (m2)