Question 4
0 / 0.5 points
In a compound reverted gear train,
all gears must have the same number of teeth.
the input and output shafts spin the same direction.
there are four shafts.
the equation $$d_2 + d_3 = d_4 + d_5$$, where $$d_2, d_3, d_4$$ and $$d_5$$ are the pitch diameters for the 1st, 2nd, 3rd, and 4th gears, respectively, must be satisfied.