Bridge Force Calculations for Hiker's Weight

[playboy2006]

A hiker, who weighs 696 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 4440 N, and rests on two concrete supports, one on each end. He stops 1/4 of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge (a) at the near end and (b) at the far end?

 

[Maxwell]

1) This is the wrong section for homework problems.

2) What work have you done so far?