Relativistic mechanics:circle becoming ellipse.

Click For Summary
SUMMARY

The discussion focuses on calculating the relativistic speed parameter β (beta) for a circle of radius 'b' in motion, which appears as an ellipse with semiminor axis 'a' and semimajor axis 'b'. The relationship established is a = b/γ, where γ (gamma) is the Lorentz factor. The equation (a/b)² = 1 - (v/c)² leads to the conclusion that β = √[1 - (a/b)²]. The terminology "length contracted" is preferred over "shrinks" to describe the phenomenon accurately.

PREREQUISITES
  • Understanding of relativistic mechanics concepts, specifically Lorentz contraction.
  • Familiarity with the Lorentz factor (γ) and its calculation.
  • Basic knowledge of geometric transformations in physics.
  • Ability to manipulate algebraic equations involving ratios and square roots.
NEXT STEPS
  • Study the derivation and implications of the Lorentz factor (γ) in detail.
  • Explore the concept of length contraction in various reference frames.
  • Investigate the mathematical representation of ellipses in relativistic contexts.
  • Learn about the applications of relativistic mechanics in high-speed particle physics.
USEFUL FOR

Students and educators in physics, particularly those studying relativistic mechanics, as well as professionals involved in high-speed motion analysis and geometric transformations in physics.

sudipmaity
Messages
48
Reaction score
0

Homework Statement



Suppose a circle of radius 'b' is set in motion.Calculate the relativistic speed parameter β(=v/c) such that the circle is seen as an ellipse of semiminor axis 'a' and semimajor axis 'b' where a <b.3 marks.


Homework Equations



L=L0

The Attempt at a Solution


Whichever direction the circle travels say x-axis the radius shrinks in that direction to 'a'.
So a=b/γ.
(a/b)2=1-(v/c)2
β=√[1-(a/b)2]
Is my deduction correct? Do I need to show more mathematics here or to say is my above workout enough?
 
Last edited:
Physics news on Phys.org
Looks fine to me. I would say "becomes length contracted" rather than "shrinks" though.
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 10 ·
Replies
10
Views
5K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 3 ·
Replies
3
Views
7K
  • · Replies 9 ·
Replies
9
Views
4K