Conceptual Dynamics - Independent Learning

Pure Rotation - Example Problem 4.2-6


The blades on the wind turbine are turning with an angular speed of ωo = 30 rpm in the clockwise direction. If the blade length is L = 120 ft and they are given a constant angular acceleration of α = 0.2 rad/s2 in the clockwise direction, determine the angular velocity and the magnitude of the acceleration of point A on the tip of the blade when t = 1 minute.




  • ωo = 30 rpm
  • α = 0.2 rad/s2
  • L = 120 ft
  • tf = 1 minute.



  • aA


Think about what we know and how we can get what we need to find.


What do we need to calculate before we can find aA.