Fig.15.31 Shows diagrammatically a compound epicyclic gear train. Wheels A, D and E are free to rotate independently on spindle C, while B and C are compound and rotate together on spindle P, on the end of arm OP. All the teeth on different wheels have the same module. A has 12 teeth, B has 30 teeth and C has 14 teeth cut externally. Find the number of teeth on wheels D and E which are cut internally. If the wheel A is driven clockwise at 1 rps while D is driven clockwise at 5 rps, determine the magnitude and direction of the angular velocities of arm OP and wheel E. B E Fig.15.31 Compound epicyclic gear train