Question

A vertical spring with a spring constant value of 4500 N/m is compressed 60 cm. A 5.5 kg pumpkin is placed on the end of the spring, and the spring is released.

To the nearest whole number, the pumpkin will rise
m.

Answer 1

Use energy conservation: 1/2 k x^2 = m g h.

h = k x^2 / (2 m g) = 4500*(0.60)^2 / (2*5.5*9.8)
= 1620 / 107.8 ≈ 15.0 m.

To the nearest whole number the pumpkin rises 15 m.