A school yard teeter-totter with a total length of 5.2m and, Ask an Expert

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Q. A school yard teeter-totter with a total length of 5.2m and a mass of 36kg is pivoted at its center. A 19 kg child sits on one end of the teeter-totter.

1) Where should a parent push vertically downward with a force of 230 {rm N} in order to hold the teeter-totter level?

2) Where should the parent push with a force of 330 {rm N}?

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