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Lesson 4: Relativistic Mass

Lesson 1: Relativity - What is it?

  1. Fermilab's Time Dilation Challenge.
  2. The Basics of Relativity (6 seconds)
  3. The Relativity Game - Challenge what you know!

Note: For Fermilab's Time Dilation Challenge and The Relativity Game, you need Shockwave. You may painlessly Download Shockwave here if you do not have it.

Lesson 2: Time Dilation

  1. The equation.
  2. Where does that come from?
  3. I still don't get it! Give me the basketball analogy.
  4. So what? There's an equation. How do I use the equation in the game?
  5. Practice Problems.
  6. Examples to aid your practice.

Lesson 3 : Relativistic Mass

  1. The equation.
  2. Where does that come from?
  3. I still don't get it! Give me the space pool analogy.
  4. So what? There's an equation. How do I use the equation in the game?
  5. Practice Problems.
  6. Examples to aid your practice.

Lesson 4 : Length Contraction

  1. The equation.
  2. Where does that come from?
  3. I still don't get it! Give me the pole and the barn analogy.
  4. So what? There's an equation. How do I use the equation in the game?
  5. Practice Problems.
  6. Examples to aid your practice.

Practice Problems.

Question 1:

A space ship with a mass of 8,000 kg would have what mass if it were traveling at 0.77 c?

Question 2:

A muon has a mass of 1.9 x 10-28 kg when at rest. What is the mass of a muon if it travels at 0.998 c?

Question 3:

The element iron has an atomic mass of 55.9 amu's. What is the mass of a carbon atom if it travels at 0.65 c?

Question 4:

An element is observed to have an atomic mass of 414.8 amu's while traveling at 0.88 c. What element would this likely be?

Question 5:

What would the mass of a 9.11 X 10-31 kg electron be if it were to travel at c?

 

What? Magnets are held up because of Relativistic Length Contraction?

Lesson 4 : Relativistic Mass

  1. The equation.
  2. Where does that come from?
  3. I still don't get it! Give me the proton example.
  4. So what? There's an equation. How do I use the equation in the game?
  5. Practice Problems.
  6. Examples to aid your practice.

 


© Brian Wegley, 1998
Comments and suggestions can be sent by e-mail to
Brian Wegley of Glenbrook South High School..
This page last updated on 7/23/98.