Question

icen Consider the wing vibration model of Figure 4.20. Using the vertical motion of the point of attachment of the springs, x(t), and the rotation of this point, ?(t), determine the equa- tions of motion using Lagrange's method. Use the small-angle approximation (recall the pendulum of Example 14.6) and write the equations in matrix form. Note that G denotes the center of mass and e denotes the distance between the point of rotation and the cen??????????????????? ter of mass. Ignore the gravitational force. ?(t) r(t)

Answer 1