B6 A 45.0-kg child swings in a swing supported by two chains, each 2.94 m long. The tension in each chain at the lowest pointis 340 N.(a) Find the child's speed at the lowest point.m/s(b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)N (upward) Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Assume the orbit tobe circular and 399 km above the surface of the Moon, where the acceleration due to gravity is 1.11 m/s2. The radius ofthe Moon is 1.70 x 106 m.(a) Determine the astronaut's orbital speed.m/s(b) Determine the period of the orbit.

Given, a child is swinging a swing through two chains mass of the child is m =45 kg length of the…

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A 45.0-kg child swings in a swing supported by two chains, each 2.94 m long. The tension in each chain at the lowest point is 340 N. (a) Find the child's speed at the lowest point. m/s (b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.) N (upward)