posted by oopu .
Raft is 4.2m wide and 6.4m long. when horse is loaded onto raft, the raft sinks 3 cm deeper into the water. Find the weight of the horse.
Horse's weight = (additional displaced water volume) * density of water) * g
The additional displaced water is
delta V = (raft area)*0.030 m
W = (4.2)*(6.4)*(0.03)*1000*9.8 newtons