### The Not-so-simple Pendulum 2

Things are roughened up and friction is now added to the approximate simple pendulum

• Find a shape which is formed by the beads after time $t$.
Extension: In a real situation there will a friction force. The coefficient of friction is $\mu$. Suppose it is not dependent on the speed of a bead. Find the shape of beads after time $t$ and describe how it is changing.