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## Circular and Rotational Motion

by: Clarissa Osagie

18

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# Circular and Rotational Motion phys 1441

Marketplace > University of Texas at Arlington > Physics 2 > phys 1441 > Circular and Rotational Motion
Clarissa Osagie
UTA
GPA 3.3
Physics 1
N/a

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These are notes over circular and rotational motion.
COURSE
Physics 1
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N/a
TYPE
Class Notes
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KARMA
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## Popular in Physics 2

This 0 page Class Notes was uploaded by Clarissa Osagie on Saturday November 28, 2015. The Class Notes belongs to phys 1441 at University of Texas at Arlington taught by N/a in Summer 2015. Since its upload, it has received 18 views. For similar materials see Physics 1 in Physics 2 at University of Texas at Arlington.

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Date Created: 11/28/15
General College Physics Circular Motion Imagine an object moving in a straight line The object moves in a straight line because the net force acting on it is in the direction of the motion or the net force equals zero The Kinematics of Uniform Circular Moti Uniform Circular Motion Describes an object that moves around in a circle With a constant speed With that being said the magnitude of the speed stays the same but the direction of the speed changes constantly Remember that acceleration is described as the change in velocity So in Uniform Circular Motion the changes in the direction of velocity is acceleration in uniform circular motion Equation for Average Acceleration V velocity nal V initial Change E Time Centripetal Acceleration or Radical Acceleration This describes the acceleration of an object that goes around in uniform circular motion Equation for Centripetal Acceleration V squared r So think of the equation this way The object moves around in a circle With a radius r and has a constant speed v Then at the same the acceleration is pointing inward So in centripetal acceleration ac v2r Frequency Frequency is the number of revolutions that happen per second Period Period is the time that is required an object to complete one revolution In many cases frequency is used to describe centripetal motion Equation to relate Period and Frequency T2 f Equation to relate Velocity and Period 21 Ir Rotational Motion Angular Quantities Axis of Rotation The axis of rotation is the center of an object that rotates in a circle Angular Position is basically how an object of interest has rotated When describing radians are used to measure how far an object has rotated Equation for Agular Position 1 9 In this equation the angle is measured in radians L well l in some cases s is used instead of l is the distance that the object has traveled and r is the distance from the axis of rotation gt 3 quot Axis Elf mutation a f f frE UE y inn 39 feuullu unsf A Angular Velocity Angular Velocity is described as the rate of change in angular position 9 final 9 intial tfinal t intial w W is used to denote angular velocity T t is used to denote time Angular Acceleration Angular Acceleration is described as the change in angular velocity diVided by change in time w nal wintial a t nal tintial

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