A 26 kg child uses a pogo stick to bounce up and down. The spring constant, k, of the toy equals 8,650 N/m. (a) By how much would the spring be compressed by the child if she simply balanced herself vertically on the pedals of the stick? (Give your answer in cm. ) 2.9 cm (b) How much energy (in ]) is stored in the spring under this circumstance? 36,373.25 X J