A box of weight (w) 60 N hangs on a ceiling as shown in the sketch below. A horizontal force F acts horizontally to the right through knot S. The knot S is in equilibrium. I 1550 T F W = 60 N 2.3 Explain what is meant by the knot S is in equilibrium. (2) 2.4 Draw the triangle of the three forces T, F and w. Clearly label the forces and all (3) the angles. 2.5 Calculate the magnitudes of the force F and the tension T. (4) [18]