Oscillatory Motion and Mechanical Waves

Springs and pendulums, and how mechanical waves carry energy through a medium.

11 questions, free, marked as you go with a worked explanation on every one.

What this covers

The questions

  1. A tuning fork vibrates at 250 Hz. What is its period?
  2. A wave has a frequency of 250 Hz and a wavelength of 1.36 m. What is its speed?
  3. A sound wave travels at 340 m/s with a frequency of 170 Hz. What is its wavelength?
  4. A wave travels from one medium into another where its speed is higher. The frequency does not change. What happens to the wavelength?
  5. Which of these is a longitudinal wave?
  6. A 0.50 kg mass hangs from a spring with a spring constant of 200 N/m. What is the period of its oscillation?
  7. What is the period of a simple pendulum 1.00 m long? Use g = 9.81 m/s².
  8. A spring with a spring constant of 300 N/m is stretched 0.040 m. What is the restoring force?
  9. Which statements about mechanical waves are correct? Select all that apply.
  10. Pushing a child on a swing at just the right moments makes the swing go much higher. What is this an example of?
  11. Use the table. Following the same relationship, what is the period of an 8 Hz wave, in seconds?

Answer these free