A 83 kg circus performer jumps from a 5.1 m height onto a trampoline and stretches it downward 0.30 m. Assume that the trampoline obeys Hooke's law.
(a) How far will it stretch if the performer jumps from a height of 8.4 m?
(b) How far will the trampoline stretch if the performer stands still on it while taking a bow?