일반물리학 1 — Equilibrium and Elasticity: Problem 8

8 Figure 12-20 shows a diver of weight 580 N standing at the end of a diving board with a length of L = 5.70 m and negligible mass. The board is fixed to two pedestals (supports) that are separated by distance d = 1.50 m. Of the forces acting on the board, what are the (a) magnitude and (b) direction (up or down) of the force from the left pedestal and the (c) magnitude and (d) direction (up or down) of the force from the right pedestal? (e) Which pedestal (left or right) is being stretched, and (f) which pedestal is being compressed?