Strong winds can apply a signgicant enough force to tall skyscrapers to set them into a back-forth motion. the amplitudes of these motions are greater at the higher floors and barely observable for the lower floors. Is it said that one can even observe the vibrational motion of the sears tower in Chicago on a windy day. As the sears tower vibrates back and forth, it makes about 8.11 vibrations in 60.0 seconds.

1. determine the frequency of vibration of the seats tower. use three sig figs.

2. determine the period of vibration of the sears tower. Enter at least three sig figs.