

This text is meant to accompany class discussions. It is not everything there is to know about uniform circular motion. It is meant as a prep for class. More detailed notes and examples are given in the class notes, presentations, and demonstrations. See the links below. 

Objectives 
Students will be able to: 
 Define the period of motion
 Define the frequency for motion
 Mathematically relate the period and frequency
 Convert from RPM’s (revolutions per second) to Hertz
 Use the definitions of period and frequency to solve word problems
 Discuss the relationship between centrifugal and centripetal forces.
 Identify the directions of the vectors.
 Describe why a person slides to the outside of a curve in a car as observed from inside the car.
 Discuss what supplies the centripetal forces
 Correctly write the units equations from memory
 List the S. I. units associates with each quantity
 Solve word problems utilizing the formulas and concepts in the unit.
 Calculate the g’s felt by a rider in an amusement park when
 He/she is spun in a horizontal circle (e.g. carousel)
 He/she is spun in a vertical circle (e.g. roller coaster loops, playground swings.)
 Describe why an irregular shaped roller coaster loop is better than a circular loop.
 Solve problems based on an automobiles ability to supply a lateral acceleration and “cornering.”
 Solve problems utilizing formulas and ratio.



