# Search results

• Users: revesz
• In Special and General Relativity
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1. ### Length contraction problem

I understand that the train would have in real life ripped appart, but then again in real life the train wouldn't be going at relative speed. also the length contraction would not neutralize the centrifical force at all, the tension on the train would still remain the same even if the train did...
2. ### Length contraction problem

Not true. While the top of the train may be traveling slightly faster, the bottom of the train would still contract at almost the same rate. If a rocket were traveling at c-5mph, and a passenger on board were to run to the front at 10mph, would he be traveling at c+5mph?
3. ### Length contraction problem

a perfectly riged train and perfectly rigid planet would pose problems for relativity. the train would contract with infinite strength, while the planet would repel the squeazing with infinite strength.
4. ### Length contraction problem

If an object were to go exactly c would it lose its 3rd dimention? what i mean is, would it have any length whatsoever?
5. ### Length contraction problem

suppose you had a planet with a train going all the way around the circumference. The train is a complete loop so you just have an endless train. now speed the train up to near c. Because of length contration would the train begin to squeeze the planet?
6. ### Time dilation

I read on howstuffworks.com that in relativity there is time dilation and another dilation where the object shinks in the direction it is going. is this correct or not(if its not correct it will probably make no sense to you)