The system shown is released from rest. After release, the 6kg block moves upwards with an acceleration of 1.5m/s2. Neglect drag, friction and the mass of the string and pulley. What is the tension in the string? N What is the unknown mass? kg ? 6kgA 5000kg locomotive is pulling 4000kg cars to the right. The locomotive is experiencing a 1 10ON drag and the cars each experience a 150N drag. How much force does the locomotive need to generate to pull the given number of cars with a constant speed? The number of cars does not include the locomotive. applied number of cars force 10 cars N LLLLLL 20 cars N 30 cars N 40 cars 50 cars N