Summary

• Orbits
• Kepler's Third Law
• Oscillations

• Written Quiz    Timer
  
  
• Oscillatory motion
  • energy for mass on a spring and pendulum
    Example #1
    
    Example #2
    
    Example #3
    
  • resonance
    • adding energy
    • graphs applet
    • radio, microwave ovens, etc.
    • Tacoma Narrows Bridge
    
  
  
  
• Interactive Example 13-3
• Interactive Example 13-6

gc6 11.10
At what displacement from equilibrium is the speed of a simple harmonic oscillator half the maximum value?

Answer















gc6 11.17
At what displacement from equilibrium is the energy of a simple harmonic oscillator half kinetic energy and half potential energy?

Answer















gc6 11.16
A 0.60 kg mass vibrates according to x = 0.45 cos(6.40t). What are the kinetic and potential energies when x = 0.30 m?
A. 0.45 J, 6.40 J
B. 2.88 J, 3.52 J
C. 1.38 J, 1.11 J
D. 0.45 J, 2.49 J
Answer















 


























 


























 



C. 1.38 J, 1.11 J