Circular Motion

• how to convert from degree to radiance

  divide by 180 , multiply by pi
• radiance --> degrees

  divide by pi , multiply by 180
• ω

  angular velocity
• equation of ω : (2)

  ω = 2π / t

  ω = 2πf
• centripetal force 


  resultant force of an object which moves in a circular path
• velocity in terms of angular velocity and radius

  v = d / t

  v = 2πr / t

  v = ωr
• centripetal acceleration

  v^2 / r

  (wr)^2 /r

  w^2r^2 / r = w^2 r
• what direction does acceleration occur

  in the direction of resultant force
• Centripetal Force in terms of F = ma


  F = ma

  a = (v^2) / r

  F = mv^2 / r