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Phys Periodic Motion

Physics terms associated with periodic (SHM, UCM, gravity) motion.

QuestionAnswer
motion that occurs along a specific path at regular intervals periodic motion
time interval required for a repeating event to occur period (T)
the number of repeating events that occur in a certain time ("rate of occurrence") frequency
unit for measuring frequency hertz (Hz)
1 Hz = _?_ waves/second 1
math relationship (proportionality) between frequency and period inversely proportional
vibration-like motion along a repeating path around a central (equilibrium) point and caused by a 'restoring' force simple harmonic motion (SHM)
force that points toward the equilibrium position and is proportional to the displacement of the object (amplitude) from that position restoring force
displacement of an object undergoing SHM from its equilibrium position amplitude
point along the path of an object undergoing SHM at which the net force is zero (0) equilibrium position
gradual increase in amplitude of SHM by applying a small force at regular intervals mechanical resonance
kicking feet on a swing, jumping on a trampoline, rubbing finger on stemware rim examples of mechanical resonance
the elongation of a spring is proportional to the tension applied to it (within its elastic limit) Hooke's Law
slope of the graph of tension force (N) applied to a spring vs. elongation (m) spring constant
opposing forces for an object suspended from a spring tension and weight
"the period of a pendulum is independent of swing amplitude" (my pulse told me this) Galileo
quantity with both magnitude and direction vector
speed in a particular direction velocity
rate of change of velocity acceleration
rate of change of speed in a constant direction linear acceleration
rate of change of direction for a constant speed centripetal acceleration
means "center-seeking" centripetal
force that causes an object to change direction but not speed by acting perpendicular to the direction of motion (at all times) centripetal force
distance around the perimeter of a circle circumference (C)
a vertical loop with a changing radius ("teardrop") clothoid loop
"gravity is directly proportional to the mass of attracting objects and inversely proportional to the square of the distance between their centers"... it's universally true! Newton
"I found the universal gravitation constant, G!" Cavendish
SI unit of force (and weight) newton (N)
SI unit of (linear and centripetal) acceleration m/s2
SI unit of mass kilogram (kg)
slowing down downward or speeding up upward positive acceleration
slowing down upward or speeding up downward negative acceleration
SI unit of coefficient of friction (no unit)
Created by: goakley