18.1- OSCILLATIONS Flashcards
What is one full cycle of motion?
from maximum height at one side to maximum height on other side + then back again
What is the lowest point when a child is on a swing called?
equilibrium position
Examples of oscillating motion? (4
object on spring moving up + down repeatedly
pendulum moving to and fro repeatedly
ball-bearing rolling from side to side
small boat rocking from side to side
How does an oscillating object mvoe?
moves repeatedly one way then in opposite direction through its equilibrium position
In one full cycle after being released from a non-equilibrium position, how does displacement change?
decreases as it returns to equilibrium
reverses + increases as it moves away from equilibrium in opposite direction
decreases as it returns to equilibrium
increases as it moves away from equilibrium towards its starting position
How does an oscillating object move?
moves repeatedly one way then in opposite direction through its equilibrium position
How does the displacement of an object from displacement change during motion?
continually changes during motion
How does the displacement change in one full cycle after being released from a non-equilibrium position? (4)
decreases as it returns to equilibrium
reverses + increases as it moves away from equilibrium in opposite direction
decreases as it returns to equilibrium
increases as it moves away from equilibrium towards starting position
What is the amplitude of the oscillations?
maximum displacement of oscillating object from equilibrium
What is free vibrations?
oscillations with constant amplitude + no frictional forces present
What is the time period of the oscillating motion?
time for one complete cycle of oscillation
What is the frequency of oscillations?
number of cycles per second made by oscillating object
What is the unit of frequency?
hertz (Hz), which is one cycle per second
What is angular frequency ω defined as?
2π/T (=2πf)
Equation for phase difference in radians?
2πΔt/T
