child weight (w) = 29 g
centripetal force = m v^2 / r = (2 * 213) - w
solve for v
A 29 kg child sits in a swing supported by two
chains, each 4.2 m long.
If the tension in each chain at the lowest
point is 213 N, find the child’s speed at the
lowest point. (Neglect the mass of the seat.)
Answer in units of m/s.
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