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Physics Chapter 10
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Gravity
Chapter Ten Circular Motion
Terms in this set (19)
Two types of circular motion:
rotation and revolution
Axis
straight line around which rotation takes place
Rotation
axis is located inside the body of the object
Revolution
when axis is located outside the body of the object
Linear Speed
distance traveled per unit of time
Tangential Speed
speed of something moving along a circular path
Rotational Speed
number of rotations per unit of time
RPM
revolutions per minute
Tangential Speed and Rotational Speed can be used
interchangeably
The faster something is turning, the faster its
tangential speed is
Tangential Speed~ radial distance x rotational speed
v~rw
Tangential speed depends on
-rotational speed
-distance from the axis of rotation
Centripetal Force
force directed toward a fixed center that causes an objet to follow a circular path
The centripetal force on an object depends on the objects
-objects tangential speed
-its mass
-radius of its circular path
Centripetal Force= mass*speed^2/radius
Fc=mv^2/r
Centrifugal Force
center fleeing
-apparent outward force on a rotating or revolving body
The "centrifugal-force effect" is attributed not to any real force but to
inertia- the tendency of the moving body to follow a straight line path
Centrifugal Force is an effect of
rotation
Is the centrifugal force part of a reaction?
no- not a true force
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