9: Two children are sitting on an unbalanced seesaw as shown. The beam has a moment inertia of 20 kgin2 about the pivot point of the seesaw. Assume that the children can be described as point masses. Use M 25 kg, M2 30 kg, D 1.5 m and L 1 m. Determine the angular acceleration of the seesaw. FBD for the system consisting of the eesaw+children. 5 points. D= 1.5 m
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