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Chapter 15 Oscillations In this chapter we will cover the following topics: Displacement, velocity, and acceleration of a simple harmonic oscillator Energy of a simple harmonic oscillator
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Chapter 15 Oscillations In this chapter we will cover the following topics: Displacement, velocity, and acceleration of a simple harmonic oscillator Energy of a simple harmonic oscillator Examples of simple harmonic oscillators: spring-mass system, simple pendulum, physical pendulum, torsion pendulum Damped harmonic oscillator Forced oscillations/resonance (15-1)
In the small-angle approximation we assumed that << 1 and used the approximation sin . We are now going to decide what is a “small” angle, i.e., up to what angle is the approximation reasonably accurate? (degrees) (radians) sin 5 0.087 0.087 10 0.174 0.174 15 0.262 0.259 (1% off) 20 0.349 0.342 (2% off) Conclusion: If we keep < 10 ° we make less than 1 % error. (15-8)
Moving support (15-13)