Can you please solve with values other than just explaining.

A countershaft has a helical gear $($B$),$ a bevel gear $($D$),$ and two supporting

bearings $($ A and $C)$ as shown in Figure. Loads acting on the bevel gear are

known.

Forces on the helical gears can be determined. Shaft dimensions are

known. All shoulder fillets have a radius of $5$ mm $.$ Only bearing A takes

thrust. The shaft is made of hardened steel. All$-$important surfaces are

finished by grinding.

$($a$)$ Draw load, shear force, and bending moment diagrams for the shaft in

the xy and xz planes. Also draw diagrams showing the intensity of the axial

force and torque along the length of the shaft.

$($b$)$ At points B$,$ C$,$ and E of the shaft, calculate the equivalent stresses in

preparation for proper diameter determination.

$($c$)$ For a reliability of $99\%,$ determine the diameter of the shaft at all points

including $B,C,$ and $E.$ The safety factor is considered as per designer

comment but it shall be greater than $1.$

$($d$)$ Design the relevant key for keyway at B and D$.$ We are using $1018$ CD Steel with Sy$=370$MPa and Sut$=440$MPa.