The period of a pulsating star with respect to the star

  • Thread starter ktdraho
  • Start date
  • #1
1
0

Homework Statement



A pulsating star has a period of 3 sec as seen from the rest mass frame of the star. What is the period of the star as measured by an observer traveling 2.4 x 108 m/s with respect to the star?


Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
1,255
3
How do you think you should start?
 
  • #3
18
0
I'd think you'd need to use Doppler. The frequency changes due to the motion, although it doesn't say which way, and you have the frequency when there's no relative motion.
 
  • #4
1,255
3
That sounds good, it should work. And thats a good point, they don't seem to say if they are moving towards or away. I'd guess away, as the standard convention is: negative velocities mean approaching eachother.
 

Related Threads on The period of a pulsating star with respect to the star

  • Last Post
Replies
7
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
6
Views
3K
  • Last Post
Replies
12
Views
9K
  • Last Post
Replies
2
Views
1K
Replies
1
Views
3K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
443
Top