Consider a pendulum bob of mass 0.01 g suspended by a massless string of length L = 12 cm. The bob in this case (for small oscillations) will behave as if it were a simple harmonic oscillator with w = root g/L. According to equation Q7.16, the lowest possible energy E0 of such a harmonic oscillator is still nonzero. What is the pendulum's classical amplitude of oscillation when it has the lowest possible quantum energy? Do you think that it would be easy to detect these oscillations?