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Gravity&Circular Mo.
Vocabulary
Term | Definition |
---|---|
Gravity | attractive field force between objects with mass |
Universal Gravitation | Newton's Law that every object attracts every other object in the universe with a force determined by their masses and their distance |
Newton's 3rd Law of Motion | forces between two objects are equal and opposite of each other |
Gravitational Constant | (G = 6.67x10^-11) relates the weak force of gravitational attraction between 2 bodies |
Mass | total matter within an object |
Radius | distance from an object's center |
Direct Relationship | when one variable changes in the same way that another one does, such as gravity and mass |
Inverse Squared | relationship when one variable changes in the opposite way of another, such as gravity and distance |
Centripetal Force | unbalanced "center-seeking" net force acting on an object to keep it moving in a circular path |
Centripetal Acceleration | "center-seeking" acceleration of an object moving along a circular path |
Tangential Velocity | linear speed of any object moving along a circular path that is perpendicular to the centripetal force and acceleration |
Path of Motion | either linear (straight) or circular |
Weight | force pulling down on an object's mass due to gravity (a.k.a. gravitational force) |
Normal Force | contact force that is perpendicular to the surface and supports an object's weight |
Tension Force | pulling force transmitted by a string, cable, chain, rope, etc. |
Friction Force | resistance force parallel to a surface and acts opposite of the direction an object is moving |
Rule of 1's | helps determine how much a variable changes when you change any other variable(s) by a certain factor |
Period | time of one circular path |
Magnitude | size or quantity (number) |