Answer the following question given this paragraph: 

Pendulums are in common usage. Some have crucial uses, such as in clocks; some are for fun, such as a child’s swing; and some are just there, such as the sinker on a fishing line. For small displacements, a pendulum is a simple harmonic oscillator. A simple pendulum is defined to have an object that has a small mass, also known as the pendulum bob, which is suspended from a light wire or string, such as shown in Figure 16.14. Exploring the simple pendulum a bit further, we can discover the conditions under which it performs simple harmonic motion, and we can derive an interesting expression for its period.


Q: What is the common name for a simple harmonic oscillator, which basically consists of a small object suspended on a wire or string?

 Choices:

- yo-yo

- metronome

- pendant

- pendulum

A:
pendulum
