For 10 points, name this type of system exemplified by springs and pendulums.
Bertrand's theorem for a radial one of these objects states that it is one of two force potentials with bound orbits for which a closed orbit also exists. An equation for resonant frequency of these objects is one half pi times angular frequency and is represented by a sinusoidal graph. When these objects are "damped," a frictional force opposes the velocity of those objects, and Hooke's law is an equation for this type of system because the restoring elastic force F is directly proportional to displacement. For 10 points, name this type of system exemplified by springs and pendulums.
Bertrand's theorem for a radial one of these objects states that it is one of two force potentials with bound orbits for which a closed orbit also exists.
simple harmonic oscillator [accept SHO] &lt;JK&gt;