The shaft is driven by a motor with a torque of 1200N.m and a rotational speed of 800rpm. A helical gear at point C is subjected to forces of 6kN, 8kN, and 4KN in the radial, tangential, and axial directions, respectively. The pitch diameter of the helical gear is 120mm. What is the assumption made in this scenario?
A) The motor is operating at its maximum capacity
B) The helical gear is perfectly aligned with the shaft
C) The forces acting on the gear are constant
D) The pitch diameter of the gear is the only factor affecting its performance