| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Study how the amplitude of the motion affects to the oscillation time.
Answer: Examining the vibrations, it is noticed that there is not much difference, even though the amplitude varies.