Term

Definition
movement of object or particle trajectory at constant speed around circle with fixed radius 


Term

Definition
centerseeking acceleration of object moving in circle at constant speed 


Term

Definition
net force exerted toward center of circle giving object centripetal acceleration 


Term

Definition
planets move in elliptical paths with sun at one focus 


Term

Definition
imaginary line from sun to planet sweeps out equal areas in equal time intervals 


Term

Definition
square of the ratio of the periods of 2 planets equals the cube of the ratio of their average distance from the sun 


Term

Definition
attractive force between 2 objects that is directly proportional to the mass of the objects 


Term
law of universal gravitation 

Definition
gravitational force between 2 objects is directly proportional the the product of their masses and inversely proportional the square of the distance between their centers 


Term

Definition
surrounds object with mass; equals universal gravitational constant times the mass of the object, divided by the square of the distance from the object's center 


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Definition
measure of object's resistance to force 


Term

Definition
size of gravitational force between 2 objects 


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Definition


Term

Definition
change in angles as object rotates 


Term

Definition
angular displacement of object divided by the time needed to make the displacement 


Term

Definition
change in angular velocity divided by the time needed to make the change; measured in rad/sec. squared 


Term

Definition
perpendicular distance from axis of rotation to point where force is exerted 


Term

Definition
measure of how effectively force causes rotation; equals force times the lever arm 


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Definition


Term
Newton's 2nd law for rotational motion 

Definition
angular acceleration directly proportional to net torque and inversely prop. to moment of inertia 


Term

Definition
point on object that moves the same way that a point particle would move 


Term

Definition
apparent force that seems to pull on moving object but does not exert physical outward push on it and is observed only in rotating frames of reference 


Term

Definition
apparent force that seems to deflect a moving object from its path and is observed only in rotating frames of reference 


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Definition
motion repeating in regular cycle 


Term

Definition
motion occurring when restoring force on object is directly proportion to the object's displace from equilibrium 


Term

Definition
time required for object to repeat 1 complete cycle of motion 


Term

Definition
in periodic motion, the max. distance object moves from equilibrium 


Term

Definition
force on spring directly proportional to amount spring stretched 


Term

Definition
device demonstrating simple harmonic motion when its bob, suspended by a string of light rod, is pulled to 1 side and released, causing it to swing back and forth 


Term

Definition
form of simple harmonic motion occurring when small forces applied at regular intervals to oscillating or vibrating object and the amplitude of the vibration increases 

