2.2.2 2.3 The resultant force acting at point O. The structure below shows a system that is in an equilibrium state. The strings with forces T1, T2 and T3 are joined at point O. The weight of the block suspended from T3 is 2 000N. 70% T₁ T3 2000N (9) 2.3.1 Explain the meaning of a closed vector diagram. (2) 2.3.2 Draw a labelled closed vector diagram of forces showing all the forces (2) acting on the point. Indicate at least one angle in your diagram. [19]​