# A nice simple harmonic oscillator

Two parallel cylinders spin in opposite directions as shown. The distance between the center of the cylinders is $$a=1$$ m . A straight uniform bar of length $$L>a$$ rests on the cylinders. The coefficient of kinetic friction between the bar and a cylinder is $$\mu=0.1$$. Find the period of the oscillations that result from displacing the bar from its equilibrium position, in seconds.

Use $$g=10$$ m/s$$^2$$.

×