2 Bamboo rafts on the Yulong River in Jiangxi, China, are a tourist attraction. A bamboo raft is made by tying together 10 lengths of bamboos. Each length of bamboo is 5 m long and 15 cm diameter. The raft is designed to carry at most 3 persons each 60 kg and standing such that the CG is 1.2 m above the raft as shown inFig.1.The draft of the raft when it is carrying 3 persons is 7.5 cm. (a)Show that the raft is stable for 3 standing persons in the middle of the raft