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Physics Chapter 8
Rotational Motion
Term | Definition |
---|---|
angular displacement | the difference between 2 angles measured from a distance line |
radian | how angles are measured for circular motion |
period T | the time it takes to make one trip around the circle |
frequency f | how many revolutions around the circle the particle makes in one second |
torque | a measure of how effective a force is at turning an object |
N*m | the SI unit for torque |
line of action | the line that the force moves along |
moment arm | the perpendicular distance that the force acts on |
positive torque | tries to rotate an object counterclockwise |
negative torque | tries to rotate an object clockwise |
angular acceleration | a response to the total torque acting on an object |
kg*m^2/s | the SI unit for momentum |