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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Two conditions for a free vibration |
- No frictional forces present - Constant amplitude |
Friction |
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Two examples of oscillation |
- Mass-Spring - Pendulum |
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Formula For Phase Difference |
Objects must oscillate at the same frequency to apply this formula. ∆t = Difference in time for objects to pass the same point in the cycle |
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Draw Displacement, Velocity and acceleration time graph for 0<x<2T |
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Define simple harmonic motion (SHM) |
Relationship between acceleration and displacement is: - Opposite - Proportional |
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What two things decrease the frequency of oscillation for a mass-spring system? |
- Adding extra masses (increased inertia) - Weaker springs (smaller restoring/resultant force) |
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What two things decrease the frequency of oscillation for a single pendulum? |
- Increased string length - Increased suspended mass
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What's the equation for sum of Ek and Ep in an energy-displacement graph setup. |
½kA² |
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Define "damped oscillation" and give an example of a force that causes this. |
- An oscillation where dissipative forces are present (e.g. air resistance, friction) |
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Draw a graph comparing light, heavy and critical damping. |
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What is meant when a system is in resonance? |
When the periodic force in in phase with the velocity of the system and exactly ½π out of phase with the displacement. |
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For an oscillating system experiencing a periodic force with little to no damping. At resonance _____________ |
Natural frequency = applied frequency |
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