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28 Cards in this Set
- Front
- Back
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_________ + ________ = Circular motion
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Inertia of moving object + Centripetal Force
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ac is an abbreviation for…..
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Centripetal acceleration
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Fc is an abbreviation for ….
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Centripetal force
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Is there such a thing as centrifugal "force?
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No. It's better to say centrifugal "effect". There is no force pulling objects outward.
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"At" is an abbreviation for…
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Tangential acceleration
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Which way does tangential acceleration act?
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In direction of travel
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Which way does centripetal acceleration act?
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Toward center of circle
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Which way does centripetal force act?
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Toward center of circle
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Straight line about which rotation takes place is ….
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Axis
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Formula for period of oscillation is …..
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T = time / revolutions in seconds
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Formula for frequency of oscillation is …
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Frequency = revolutions / time
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How are period and frequency related?
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Inversely
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What is the force that keeps objects moving in a circle?
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Centripetal force
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Some examples of centripetal force are….
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String on a whirling can;
Wall of amusement ride on the rider; Friction force on a dime going round and round on a turntable; Friction on wheels of car going around a bend; |
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How can you make artificial gravity such as for a space station?
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Spin a large cylinder. The walls would be the floors for the occupants
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Does centripetal acceleration increase with rotational speed?
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Yes
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If Fc is constant, but radius is reduced then velocity does what?
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Increase
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Why does a circular velocity produce acceleration?
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Changing direction instead of changing magnitude
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Higher linear velocity gives _____ Fc.
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larger
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How do you get distance in circular motion problems?
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Circumference: C = 2 π r
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How do you get time out of rpm’s?
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Flip it. Time divided by revolutions
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What Fc holds a car in a flat curve?
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Friction
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What Fc holds the moon and earth together?
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Gravity
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RPM's stands for...
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revolutions per minute
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RPM's is what type of speed?
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Rotational Speed
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The mass and radius must be in the SI units of ...
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Kg and meters
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How is the force of gravity between 2 objects related to the distance between them?
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Inversely square
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In the experiment with a whirling mass, the ceintripetal force was provided by...
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The hanging weights, in newtons
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