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Fortescue Metal Group's Infinity train will never need to be fuelled, never need to be charged... it uses regenerative braking to charge onboard batteries when it goes downhill and uses that charge to get back up the hill. Does that sound like a perpetual motion machine to you?

The project doesn't actually rely on a secret source of "free energy" to work. Sorry if that disappoints you! It's all based on sound physics, which I explain in this video and then I run the calculations to see whether the numbers add up!

Calcs from David Cebon, Professor of Mechanical Engineering at Cambridge University can be found here!
https://textdoc.co/2Aztp3Y8KQH5Puhb

Bookmarks:
00:00 Intro
01:34 What is Fortescue's Infinity Train?
03:03 THe physics behind the Infinity Train
05:53 Calculations
09:35 e-Dumper: Kuhn Schweiz AG's electric mining truck
11:34 Rosie's thoughts on regenerative braking technologies
11:43 Thanks to Brilliant for sponsoring this video!
12:41 Outro

Sources:
Craft4 Shubham - 100% working free energy
   • 100% working free energy @inventus ||...  

Veritasium - Risking My Life To Settle A Physics Debate
   • Risking My Life To Settle A Physics D...  

Fortescue Metals Group - Fortescue Williams (WAE) settlement powers development of world's first Infinity Train
https://www.fmgl.com.au/in-the-news/m...

Tom Scott - The UK's last aerial ropeway uses no power, moves 300 tonnes a day, and will be gone by 2036.
   • The UK's last aerial ropeway uses no ...  

UN Climate Technology Centre & Network - Regenerative braking in trains
https://www.ctc-n.org/technologies/re...

Fortescue Metals Group - Climate Change Report FY21
https://www.fmgl.com.au/docs/default-...

Ogawa et al, 2017 - Method of Calculating Running Resistance by the Use of the Train Data Collection Device
https://www.jstage.jst.go.jp/article/...

Lucas di Grassi - eDumper - The BIGGEST EV in the world!
   • eDumper -  The BIGGEST EV  in the world!  

Jalopnik - These Electric Trains Never Need Recharging Thanks to Regenerative Braking
https://jalopnik.com/these-electric-t...

If you would like to help develop the Engineering with Rosie channel, you could consider joining the Patreon community, where there is a chat community (and Patreon-only Discord server) about topics covered in the videos and suggestions for future videos and production quality improvements.   / engineeringwithrosie  

This video was sponsored by Brilliant.