Epicyclic gear train. Example made easy.

In the epicyclic gear shown in the figure, gear B has 120 teeth externally and gear 100 teeth internally. The driver A has 20 teeth, and the arm E is connected to the driven shaft. Gear D has 60 teeth. If A revolves at 100 rpm CCW and D at 27 rpm CCW. Find the speed of the arm E. #mechanicalengineeringstudent #mechanicalengineering #mechanicsofmaterials #mechanicsofsolids #theoryofstructure #theoryofmachines #geartrain #civilengineering #engineering