A 16.0-kg child swings in a swing supported by a chain, 5.06 m long. The tension in the chain at the lowest point is 200 N. a. Find the child’s speed at the lowest point. b. Find the force exerted by the seat on the child when the chain makes a 30◦ angle with the vertical. (Ignore the mass of the seat, and the small angular acceleration at this point.)
a= 3.69 m/s
b= <0.5, 157> N