Problem: While decompressing before a physics exam, you find yourself at the HPER building in the swimming pool. You see someone approaching the diving board, and decide to analyze the rotational kinematics of his upcoming dive. To make your life easier, you approximate the diving board as a thin, rigid plank, with a length L = 2m . It is supported at a pivot point . [ from the dry end. A spring at the dry end provides the "springiness." You guess that the inertia of the board is 20 kg, and the inertia of the person is 70 kg. Draw an extended free body diagram for the board when the person is at the very end and the board is stationary. (Remember to identify each force separately and to draw them to a reasonable scale to each other.) To support the person standing at the end, the spring stretches, and you notice the board is at an angle of 15' to the horizontal. To simplify your calculations, assume that the spring continues to pull straight down on the board, even though the board is at an angle. Calculate the size of each force