4.8 Natural Frequency and Resonance (3/10) Flashcards
(13 cards)
What is natural frequency?
Every object has a natural frequency at which it tends to vibrate when disturbed.
The frequency that objects want to vibrate at when not subjected to a continuous or repeated external force.
What determines the natural frequency of an object?
The mass, shape, and elastic properties of the object.
Natural frequency is intrinsic to the object and does not depend on external factors.
True or False: An object’s natural frequency will depend on external forces
False.
Natural frequency is solely determined by the object’s characteristics.
Fill in the blank: The natural frequency of an object is dependent on its _______.
mass, shape, and elastic properties.
These characteristics define how an object will respond to vibrational forces.
What happens to an object at its natural frequency?
It vibrates freely
Objects will oscillate at their natural frequency when not influenced by continuous or repeated external forces.
What does the term resonance mean?
One object’s vibrations can cause another nearby object to vibrate.
Originates from Latin “to resound”
What is required for one object’s vibrations to cause another object to resonate?
The first object must vibrate at the natural frequency of the second object.
How did resonance factor into the Tacoma Narrows Bridge incident?
It may have played a factor in its destruction.
In what context is resonance commonly found in musical instruments?
As a common cause of sound production.
True or False: The Roman Army broke step when crossing bridges to avoid resonance.
True
Fill in the blank: One object’s vibrations can cause another nearby object to _______.
[resonate]
What phenomenon can occur when objects vibrate at their natural frequencies?
Resonance
resonance is a powerful phenomenon where a system responds with maximum amplitude when driven at its natural frequency by an external force
it can be both beneficial and destructive depending on the context.
