1. Mechanical Resonance

2. Natural Frequency
All objects have a NATURAL FREQUENCY at which they tend to vibrate. This frequency depends on the material the object is made of, the shape, and many other factors.

3. Mechanical Resonance
If a PERIODIC FORCE or vibration has the SAME (or very close to the same) frequency as the NATURAL FREQUENCY of the object, resonance occurs. When resonance occurs the object will begin to vibrate with a VERY LARGE AMPLITUDE.

4. Mechanical Resonce
Approximately equal
Forcing Frequency
Under these conditions, large amplitude oscillations will occur.
Natural Frequency

5. Resonance Applet

6. Swing Set Resonance

7. Tuning Fork Resonance

8. Bee Unlocks Pollen

9. Building Resonance

10. Resonating Wine Glasses

11. Ground Resonance

12. Wing Resonance

13. Breaking Wine Glass

14. Breaking Wine Glass (part 2)

15. Bridge Resonance

16. Gallopin’ Gertie

17. The Brown Note