Terms in this set (21)
refers to motion that is repeated at regular intervals of time.
also known as resting position
- The position assumed by the body when it is not vibrating.
is a force that tends to restore a body from its displacement to its equilibrium position
the maximum displacement of a body from its equilibrium position.
the time required to make a complete to-and-fro motion.
-usually expressed in seconds
- one complete to-and-fro
the number of cycles per unit of time.
- SI unit is hertz (Hz)
One hertz is equal to one cycle per second.
- Type of periodic motion where the restoring force is proportional to the displacement of the body from its equilibrium position. This restoring force acts in a direction opposite that of the displacement.
that the oscillating body is moving at its maximum speed when .
a projection of uniform circular motion along a diameter.
invented the grandfather's clock in 1658.
Henry Clay Work
entitled "Grandfather's Clock"
Any object which can swing freely from a pivot point under the influence of gravity.
-may be simple or physical
Consists of a concentrated mass called the bob suspended by a light thread and attached to a fixed support as shown in figure 8-6.
The period of a simple pendulum is directly proportional to the square root of its length
The period is inversely proportional to square root of the acceleration due to gravity
The period is independent of the mass of the bob
The period is independent of the angular amplitude if angular displacement is small, say less than or equal to 10 °
laws of simple pendulum
one where the hanging object is a rigid body.
Damped harmonic oscillation
An object initially set into vibration will have its amplitude continuously decreasing due to frictional effects. Eventually, the object will stop moving.
the system oscillated with decreasing amplitude until it becomes zero
every simple harmonic oscillator has its natural frequency. However, if such system is subjected to an external force
Shattering of wine goblet by operatic tenor _____ while singing and collapsing of buildings and other structures during earthquakes are some of the effects of resonance.
the frequency of force matches the natural frequency of the vibrating system