A baby bouncer is a harness attached to two lengths of elastic cord
PHYSICS · Multi-part · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A baby bouncer is a harness attached to two lengths of elastic cord. It enables a baby to bounce up and down gently in SHM. A one-year-old baby of mass 10 kg is placed in the harness. The elastic cords stretch from 1.2 m to 1.4 m.
(a) Using g=10 Nkg−1 , show that the time period of the vertical oscillations of the baby is just less than 1 s.
(b) If the amplitude of the baby's oscillations is 20 cm, i determine the maximum velocity of the baby. ii show that the maximum acceleration of the baby is about the same value as that caused by gravity.