Question

A 37.0-kg child swings in a swing supported by two chains, each 3.06 m long. The tension in each chain at the lowest point is 354 N. (a) Find the child's speed at the lowest point. 5.8 Incorrect: Your answer is incorrect. Can you find the net force on the child at the lowest point of the swing? Do you expect this to be zero if the child is moving in a circle? 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)

Answer 1

(a) At the lowest point, Tz mu? "R + mg » T-mg moz R my R 2x 354 – 37*9.8 z 345.4 a oz 345.4 XR 345.4x 3.06 m 37 5.345 m/ see (b) Net face, fz mez 2. - fa 37x5.345 3.06 - fz 344.44 N