A uniform wooden plank AB of length 4.0 m and weight 200 N rests horizontally on two supports placed 0.5 m from each end.
a. (i) Calculate the vertical reaction at each support when the plank is alone on the supports.
b. (ii) A person of weight 600 N now stands at a point 1.0 m from end A. Determine the new reactions at the two supports.