A gear reduction unit uses the countershaft shown in the fig

A gear reduction unit uses the countershaft shown in the figure. Gear A receives power from another gear with the forceFA applied at the 20 pressure angle as shown. The power is transmitted through the shaft and delivered through gearB through a transmitted force FB 788 lbf at the pressure angle shown. The peak moment is 7,092 lbf in at point C. Determine the minimum Goodman factor of safety for fatigue based on infinite life. The shaft rotates at a constant speed, has a constant diameter, and is made from cold-drawn AISI 1018 steel

Solution

The factor of saftey for the above diagram is 4 .

By the help of torsion equation I am going to answer this question .