関連ワード:  the work done by frictional force on a surface in drawing a circle    the work done by the frictional force on a surface    the work done by the frictional force on a surface in drawing    the work done by frictional force on a surface in drawing a circle of radius r    the work done against the frictional force on a surface    the work done by frictional force on an object moving on a rough surface is    what is the work done by frictional force on an object when dragged along a rough surface    what is the work done by frictional force    what is the work done by friction    how does friction affect work done  
結果 : the work done by frictional force on a surface