Physics Help Forum Roller Coaster Energy

 Energy and Work Energy and Work Physics Help Forum

 May 30th 2013, 05:40 PM #1 Junior Member   Join Date: Jan 2013 Posts: 6 Roller Coaster Energy Hi, I am calculating energy (if there were to be no energy lost due to friction, etc) for this roller coaster. I understand that at point A there is only GPE and that at point E there is only KE. I was wondering if there would be both KE and GPE at point B and C. Would there be both KE and GPE at point D as well? Thanks!
May 31st 2013, 05:50 AM   #2
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 Originally Posted by njuice8 I was wondering if there would be both KE and GPE at point B and C. Would there be both KE and GPE at point D as well?
Yes - assuming no friction, energy principles say that the sum of KE and PE is constant throughput the ride. So as the roller coaster descends it loses some PE and gains an equivalent amount of KE. Hence at intermediate points B, C and D it has some PE and some KE.

 Tags coaster, energy, kinetic, potential, roller, roller coaster

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