A diving board length L = 5.20m that weighs 205N is supported by two pillars. One pillar is at the left end of the diving board, as shown below; the other is distance d = 1.70m away. Find the magnitude of the force exerted by the left pillar when a 90.0kg diver stands at the far end of the board.

Answer 1

I can't conceptualize this, but draw a sketch, with forces both up and down (forces down: weight of board, and diver )forces up: forces at each pilar.

Of course, the sume of all vertical forces are zero.

then, sum moments about any point, I suggest the right pillar. the sum of moments is zero.