"Each pod is capable of holding 25 people at maximum safe capacity. Assuming each person can reasonably be 100kg, that means the safe load placed on any one pod is 2500kg.
The pods themselves weigh 10,000kg. The radius of the London eye is 67.5m.
Since at the bottom apex of the rotation the total force from centrifugal/centripetal force is equivalent to weight, a centrifugal force equal to 2500x9.81=24,525N is the maximum safe level.
F=MV2/R
V=sqrt(FR/M)
V=sqrt(24525x67.5/10,000)
V=12.9m/s
The pods could travel at approximately 28mph, or complete one rotation every 33 seconds, before the forces on the pods exceed safe levels. Theoretical maximum levels would be higher, but without stress testing the material cannot be precisely calculated."
#20 Legibly. Or it would be completely black.