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Circular Motion

QuestionAnswer
When calculating angles in circular motion we use units of? Radians
To convert from degrees to radians we multiply by pi/180
To convert todegrees from radians multiply by 180/pi
Angular velocity is.... the angle swept out by a radius per unit time, symbol w
The units for angular velocity is rad/s
angular velocity = angle change/time
angular velocity is also related to the frequency of a system
angular velocity also = 2 x pi x f
The time period of a system can be eqauted to 1/f or 2pi/angular velocity
The linear speed of an object moving in a circle is related to its angular velocity
linear speed = radius x angular velocity
The force on an object moving in a circular path is also called centripetal force
the size of a centripetal force is given by either F=mv^2/r or mrw^2
centripetal acceleration = v^2/r or rw^2
Created by: Gavin