Zeerust Combined School Assignments Grade 12 Learners for June Exams 2021 Question 1 1. Block X has a mass of 4 kg and Block Y has a mass of 2 kg, Block X is placed on a rough table that has a coefficient of static friction of 0.18. Block X and Block Y are joined by a light, inextensible string over a frictionless pulley and Block Z is placed on top of Block X as shown in the diagram below. 2 x y The system, as shown in the diagram, is only just at rest and on the limit of sliding. 1.1 Determine the tension in the rope joining Block X and Block Y while the system is at rest. (2) (2) 1.2 Define a frictional force. 1.3 State the magnitude of the frictional force required for Block X to be at rest. (2) (5) 1.4 Calculate the minimum mass of Block Z to stop Block X from sliding.​