Register to reply

Stresses in a rotating object?

by billyboy
Tags: object, rotating, stresses
Share this thread:
billyboy
#1
Aug18-04, 01:58 AM
P: 3
Has anyone considered the following. If I have a really big disc and rotate it at a certain angular velocity. Then at some distance from the centre the tangential speed of the disc will equal the speed of light and any distance beyond will have a speed greater than that of light. Obviously this cannot be the case and some strange time dilation and length contraction effects will take place. Can anyone explain exactly what does happen? Presumably some stresses are set up in the disc which could be calculated?
Phys.Org News Partner Science news on Phys.org
Scientists discover RNA modifications in some unexpected places
Scientists discover tropical tree microbiome in Panama
'Squid skin' metamaterials project yields vivid color display
pervect
#2
Aug18-04, 08:27 PM
Emeritus
Sci Advisor
P: 7,659
Try the physics faq on the rigid rotating disk in special relativity. Hopefully it will answer your question.

http://math.ucr.edu/home/baez/physic...igid_disk.html
mijoon
#3
Aug18-04, 11:06 PM
P: 50
Quote Quote by pervect
Try the physics faq on the rigid rotating disk in special relativity. Hopefully it will answer your question.

http://math.ucr.edu/home/baez/physic...igid_disk.html
Good link, fasinating topic!


Register to reply

Related Discussions
Friction of Rotating Object General Physics 14
Object rotating on string General Physics 4
Reducing radius of rotating object General Physics 5
Speed of a projection of a rotating object Classical Physics 4
Rotating object Introductory Physics Homework 2