Fix the 100g mass marked P at B, the 80 cm mark of the uniform metre rule, using an adhesive. Suspend another 100g mass marked Q at A, a distance V = 10.Ocm from the 0 cm mark of the metre rule. Balance the whole arrangement horizontally on a knife edge as shown in the diagram above. Measure and record the distance U of K from the 0 cm mark of the metre rule. Repeat the procedure for five other values of V = 15.0, 20.0, 25.0, 30.0 and 35.0 cm In each case, measure and record the Corresponding values of U. Tabulate your readings. Plot a graph of U on the vertical axis against V on the horizontal axis. determine the: (1) slope, s, of the graph (2) intercept c, on the vertical axis. Evaluate (i) \(K_1\) =\(\frac{(1 - 2s)}{s}\) 100: (ii) \(K_2\) = \(\frac{2c}{s}\) - 160 State two precautions taken to ensure an accurate result (b)i. State two conditions under which a rigid body at rest remains in equilibrium when acted upon by three non-parallel coplanar forces. ii. Explain how the position of the centre or gravity of a body affects the equilibrium of the body.