Important Terms + Concepts: 0 Oscillations + Simple Harmonic Motion 0 Hooke's Law and Restoring Force 0 Wavelength, Wave Speed, Nodes [Antinodes 0 Period, Amplitude, Frequency 0 Standing Wave vs. Travelling Wave 0 Mechanical vs. Electromagnetic Waves 0 Centripetal Acceleration Tangential velocity 0 Transverse vs. Longitudinal Waves 0 Tangential acceleration (conceptual) o Crest/Trough o Centripetal vs. Centrifugal Force Short Answer: Part 1: Hooke's Law and Restoring Force 1. A spring with a spring constant of 75.0 N /m is stretched horizontally from equilibrium to the right 15.0 m. Calculate the restoring force. 2. The same spring from #1 is stretched 45.0 m from equilibrium to the left. Calculate the restoring force. 3. Calculate (a) the displacement 950. N of force stretches a spring with a spring constant of 14-0. N/m (b) the force needed for the same spring to stretch the spring -13.0 In. Part 2: Simple Harmonic Motion 4. Draw a diagram of a system simple harmonic motion for (a) a horizontal spring and (b) a simple pendulum. Label three primary positions in the motion (-A, +A, xequilibn'um) and include information about the speed and acceleration at each of these positions. 5. A grandfather clock needs to have a period of 5.00 seconds. Calculate the length of pendulum on (a) earth and (b) the moon where gravity is 1/6'11 of gravity. 6. Determine the spring constant of a vertical spring in simple harmonic motion with a mass of 50.0 g attached to the end that completes 25.0 oscillations in 7.50 s. 7. A mass of 0.950 kg is attached to a spring and is set into simple harmonic motion with a frequency of 2.50 Hz. Calculate the spring constant. 8. The reading on a metronome indicates the number of oscillations per minute. Calculate the (a) frequency and (h) period of the metronome's oscillation when the metronome is set to 14-5 oscillations per minute. Part 3: Waves + Vibrations, Sound 9. A sound wave produced by a clock chime is heard 515 m away 1.50 5 later. a. What is the speed of sound in the air? b. The sound wave has a frequency of 436 Hz. What is the period of the wave? c. What is the wavelength