Question

1. Two children are playing on a seesaw. The child on the right weighs 75 lbs the child on the left weighs 110 lbs. The see saw is 9 feet long.
2. 1. Find positions for the children where the seesaw will be at equilibrium. (Assume that the axis of rotation is at 0, to the left is – to the right is +)
3. 2. When the seesaw is at equilibrium, where is the center of mass?
4. 3. If we ignore the mass of the seesaw itself and assume the children are point masses … what is the moment of inertia? (Please assume that the clockwise rotation is +)

Answer 1

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