A bobbin rolls without slipping over a horizontal surface so

Last updated: 6/10/2023

A bobbin rolls without slipping over a horizontal surface so that the velocity v of the end of the thread point A is directed along the horizontal A board hinged at point B leans against the bobbin Fig 4 The inner and outer radii of the bobbin are r and R respectively Determine the angular velocity o of the board as a function of an angle a