Even if you don't agree with my calculations, you should see a problem here. You've only accounted for 1 of the masses turning around but 20 accelerating.

I counted the braking force of 1 mass because it is the total force applied to 1 mass durring acceleration, the two masses in the turnarounds cancel each other out , why cant you understand that now ...

Originally Posted By: Kallog
Is this how it works?:

1. Accelerate the mass, starts moving the pipe.
2. Turn it around, applies a force the wrong way.3. Turn around again, applies the same force the opposite way.
4. Repeat.

The two turn-arounds cancel each other out. Leaving only the acceleration to propel the pipe?

3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.