Resonant behavior is useful in many situations. Also, when pushing someone on a swing, you probably know from experience that you can generate a large swing amplitude by pushing with the natural rhythm of the swing.
Resonant phenomena can also have negative consequences.
Perhaps the most infamous example of this was the 1940 collapse of the Tacoma Narrows Bridge in Washington state which resulted because the normal ebb and flow of air currents past the bridge had a frequency that, unfortunately, was close to a natural vibrational frequency of the bridge. This generated large vibrational amplitudes on the bridge which eventually caused it to collapse. Experimental setup for Activity 1 Answer the following question concerning Activity 1. A car's front suspension has a natural frequency of 0.45 Hz. At a certain speed, the driver notices that the car begins to shake violently.