Repeat Problem 1.29 using as coordinates \(x_{1}\), which is the displacement of the mass center, and \(x_{2}\), which is the displacement of the point of attachment of the spring that is a distance \(3 L / 4\) from the left end.

Data From Problem 1.29:

Let \(x\) be the displacement of the left end of the bar of the system in Figure P1.29. Let \(\theta\) represent the clockwise angular rotation of the bar.

T x k FIGURE P1.29 3L 4 F(1) k