Three boxes, each of mass 20.0 kg are on a frictionless table, connected by massless strings. A force of tension T1 pulls on the right most box (A) such that the three boxes accelerate in the positive horizontal direction at a rate of a = 1.2 m/s2.
1) What is the magnitude of T1?
2) What is the net horizontal force on box A ?
3) What is the net force that box B exerts on box A?
4) What is the net horizontal force on box B?
5) What is the net force box C exerts on box B?