Four Happy Kids Are Lining Up and Jumping Off a Diving

Multiple Choice

Four happy kids are lining up and jumping off a diving board one after another. The kids, each with a mass of 40 kg, are situated as in the above figure, and the uniform board has a total mass of 60 kg. Calculate the force on the support closest to the water.

A) 3140 N, up
B) 4320 N, down
C) 4320 N, up
D) 3140 N, down
E) 3920 N, down