5. A girl of mass 48 kg takes a lift from the ground floor up to the second floor. She is holding a package that weighs 5 kg by means of a light inextensible string. The lift initially accelerates at 2 ms-2 and then travels at a constant speed of 5 ms-1. Finally, the lift decelerates at 3 ms-2. The normal reaction of the floor of the lift on the girl is R N. (a) Find the minimum value of R during the motion. [3] (b) Given that the string does not break during the motion, find the maximum tension in the string during the motion. [3]