4. An 80 kg, 12 m uniform diving board in static equilibrium is shown below. Support A is providing a 3000 N force directed downward on the board. Determine the force provided by support B and the distance, /. (FB=4470 N, /=9.11 m) 12 m 5. A 0.75 kg board of length 2.60 m initially rests on two supports as shown. What maximum distance, x, from the right-hand support can a 1.20 kg bird walk before the board begins to leave the left-hand support? What force does the right-hand support exert on the board at that instant? (x=0.3125 m, Fright=19.11.N) K-0.40 m-* - 1.40 m