Those crazy science pranksters at EepyBird have done it again. This time, it's human propulsion from Coke Zero and Mentos. Take a look.
The video raises valid questions.
1. Is Coke Zero a superior propellant or a more lucrative product placement? Perhaps the answer is "yes." I ask because I do not know.
2. Something here is begging to be calculated, but I fear there are too many unknowns. Help me out, bloggees! Is there some reasonable way around the many unknowns?
3. Why is the vehicle braked from the start?
4. I don't understand all the design details, but were they hoping for a Newton's third law push from that wall? Or the transparent pistons? Was this really the best thrust design?
Fun to watch as always with these guys!
1 comment:
The main force applied to the vehicle was from plexiglass rods inserted into the PVC as they were forced against the plywood barrier by the pressure created by the mentos-diet coke reaction. Had there been a better seal between these tubes and the PVC pipe. the vehicle would have gone farther. This is not a "rocket car" in the true sense of the term where there is only a working fluid/gas conservation of momentum thing going on bet very clever (and cool) nonetheless. Also a good object lesson in OBSERVATION.
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