How do i find the mass of this rollercoaster?

Question

How do i find the mass of the Kingda Ka rollercoaster?

http://en.wikipedia.org/wiki/Kingda_Ka

Answer 1

You cannot do it by calculations. Even the initial acceleration is monitored and dynamically adjusted so that the launch speed is precise; that is, it compensates for variations in mass caused by the number of passengers, and even would compensate for wind forces for or against the motion of the rollercoaster..

If you want to know the mass of the rollercoaster, you will have to write to the manufacturers!