- #1

- 23

- 0

## Homework Statement

Question 8

## Homework Equations

E=(kx^2)/2

E=(Iw^2)/2

I=(ml^2)/3

## The Attempt at a Solution

I don't know how to start to solve the problem, because I don't really know which part should I refer to.

First I use the energy.

So the energy stored in the spring will converted to the rotational kinetic energy for the rod.

But I fail to find the x (distance of the spring compressed) Thanks