Question

1.  A student uses a spring (with spring constant 360 N/m) to launch a marble vertically upwards. The marble's mass is 0.050 kg and the spring is compressed 0.10 m.

Answer 1

$$mgh=0.5kx^2\\(0.05)(9.8)h=0.5(360)(0.1)^2\\h=3.7\ m$$