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Unformatted text preview: Technical Physics 1
Rotational Motion How far ? angular displacement ()
the amount of rotation
degrees radians revolutions 1 rev = 360 = 2 rad How fast ? angular velocity ( )
the rate of change in angular displacement
radians/second compare to frequency ( f )
f = rev/sec or rev/min = rad/sec Changing motion Angular Acceleration () the rate of change in angular velocity.
rad/sec2 Compare Formulas Linear velocity vs. rotational Linear velocity (v) will be expressed in units such as ft/s or m/s. Rotational velocity ( ) will be expressed in rad/sec, but most often determined from the frequency in rev/min or rev/sec. Problem Solving What is being asked for ? What is given ? What facts(formula) relate what is asked with what is given ? Substitute Calculate
CHECK THE ANSWER!! Does it answer the question? Does it make sense? Is there a need for rounding? ...
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This note was uploaded on 09/21/2008 for the course PHYSICS 151 taught by Professor Warren during the Spring '08 term at Fox Valley Technical College.
- Spring '08