Suppose your lab partner has a height L = 173 cm and a weight w = 719 N. You can determine the position of his centre of gravity by having him stretch out on a uniform board supported at one end by a scale, as shown in the figure below. L/2 ta Xcg OL W If the board's weight W 54 N and the scale reading F = 3.1 x 102 N, find the distance of your lab partner's centre of gravity from the left end of the board. Express your answer to 2 significant figures.