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Spacetime homework problem

Thread starter athrun200
Start date Sep 13, 2011
Tags

Spacetime

3 replies · 2K views · last reply Sep 13, 2011

athrun200

Thread starter
Sep 13, 2011

#1

Homework Statement

Photo of a printed textbook page titled practical space travel, showing a numbered special relativity problem about a rocket travelling to Sirius at 0.75 of the speed of light, with parts a to i and lettered sub-questions.

Homework Equations

The Attempt at a Solution

Handwritten spacetime diagram work: left panel 'Earth frame' with t and s axes showing a worldline with events 1, 2 and 3 and labels 7.67 yr, 7 yr and 8.7 yr; right panel 'Jane's frame' with a shorter worldline; below, handwritten answers to parts a through f and notes for parts g and h.

Discussion

Spinnor

Gold Member

Sep 13, 2011

#2

This problem is worked out in detail to a different star, see:

http://en.wikipedia.org/wiki/Twin_paradox

athrun200

Sep 13, 2011

#3

I am sorry, I don't understand what is the relationship between twin paradox and my question.

vela

Staff Emeritus

Science Advisor

Homework Helper

Sep 13, 2011

#4

Incoming and outgoing just tells you what direction the stations are moving. It just means that they're at rest relative to James.

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