two children and many presents are balanced on a seesaw. the boy, a present, and the girl are on the left, while the oth
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two children and many presents are balanced on a seesaw. the boy, a present, and the girl are on the left, while the oth
two children and many presents are balanced on a seesaw. the boy, a present, and the girl are on the left, while the other three presents are on the right. the boy has a mass of 19.26kg and is 4.44m from the pivot. the girl has a mass of 29.15kg but is only 1.86m from the pivot. between them at 2.44m is a 19.10kg present. on the other side, are presents at 0.75m, 2.66m, and 4.05m. the middle present has a mass of 14.82kg and the end present has a mass of 19.63kg. what is the mass of present F? (the answer is 89.89kg but I don't know how to get it)
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