Rotational Motion
Define: rotational motion

 

Give three examples of rotational motion.
 
 
 
 
 

Define: Radian
 

Define: Angular displacement
 

Give the formula for angular displacement.
 
 

Give two examples in which this measure would be relevant.
 
 
 
 

A girl sitting on a merry-go-round moves counterclockwise through an arc length of 2.50 m.  If the girl’s angular displacement is 1.67 rad, how far is she from the center of the merry-go-round?
 
 
 
 

Define: Angular speed
 

Give the formula for angular speed.
 
 
 

Give two examples in which this measure would be relevant.
 
 
 

A car tire rotates with an average angular speed of 29 rad/s.  In what time interval will the tire rotate 3.5 times?
 
 
 
 

Define: Angular acceleration
 

Give the formula for angular acceleration.
 
 

Give two examples in which this measure would be relevant.
 
 
 
 
 

What angular acceleration is necessary to increase the angular speed of a fan blade from 8.5 rad/s to 15.4 rad/s in 5.2 seconds?
 
 
 


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