A pendulum of length L has a bob of mass m attached to a light string, which is attached to a spring of force constant k. With the pendulum in the position shown in Figure, the spring is at its unstretched length. If the bob is now pulled aside so that the string makes a small angle ? with the vertical, what is the speed of the bob after release as it passes through the equilibrium position?

Transcribed Image Text:

7 E