5.2 circular motion

• what is 360 degrees in radians?

  2π
• what are the components of this equation?

  ω = angular velocity

  T = time period

  
• what is the relationship between time period and frequency?


  T = 1/ f
• what is centripetal force? 


  a constant net force perpendicular to the velocity of an object that causes it to travel in a circular path
• what do the components of this equation represent? 


  ω = angular velocity

  v = linear velocity

  r = radius

  
• what happens to the angular velocity when the radius is doubled?

  stays the same
• what happens to the radius when the linear velocity is doubled?

  radius is doubled
• what factors effect centripetal acceleration?

  speed of the object

  radius of the circle
• what is an experiment that investigates circular motion?

  • swing a bung around in a horizontal circle
  • suspended weight remains stationary as long as the centripetal force it supplies is enough to make the bung travel in a circular path
  • if centripetal force required is larger mass moves upwards
  • paper clip acts as a maker to make this clear
• what are the components?

  A) bung

  B) glass tube

  C) paper clip

  D) string

  E) weight