Question

A ball of mass 100 g is dropped from a height _h _=10 cm on a platform fixed at the top of a vertical spring (as shown in figure). The ball stays on the platform and the platform is depressed by a distance $\frac{ℎ}{2}$.The spring constant is ______ Nm–1. (Use g = 10 ms-2)

Answer 1

By energy conservation
PE = KE