Question

A pogo stick has a spring with a force constant of 2.85 ✕ 104 N/m, which can be compressed 11.5 cm. To what maximum height (in m) can a child jump on the stick using only the energy in the spring, if the child and stick have a total mass of 41.0 kg?

Answer 1

1/2 k x^2 = m g h

1/2 * 2.85E4 * .115^2 = 41.0 * 9.81 * h