Figure presents a gearbox that you are going to design. The input shaft rotates at n1= 1500 rpm in a counterclockwise direction. The gearbox is needed to be designed sothat the output shaft rotates at n5 = 500 rpm (approximately). The suggested module m for all gears G1, G2, G3, G4 and G5 is  m = 2. The number of teeth and the pith diameter d of the gear  G1 are  36 and  72  [mm] respectively. The given data is summarised and shown in Table Q3

                              Design parameters for a gearbox with 5 gears G1, G2, G3. G4 and G5