A school yard teeter totter with a total length of 546 m, Ask an Expert

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A school yard teeter totter with a total length of 5.46 m and a mass of 35.9 kg is pivoted at its center. A 17.7 kg child sits on one end of the teeter totter. Where should a parent push with a force of 272 N in order to hold the teeter totter level?

Where should the parent push if the mass of the teeter totter were doubled?

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