Chapter 38A -- Relativity

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Example 2: A meter stick moves at 0.9c relative to an observer. What is the relative length as seen by the observer? L L v c 0 1 2 2 L(1 m) 1 (0.9 c) / c 2 2 L (1 m) 10.81 0.436 m L o L = ? 1 m 0.9c Length recorded by observer: L = 43.6 cm If the ground observer held a meter stick, the same contraction would be seen from the ship.
Foreshortening of Objects Note that it is the length in the direction of relative motion that contracts and not the dimensions perpendicular to the motion. Assume each holds a meter stick, in example. If meter stick is 2 cm wide, each will say the other is only 0.87 cm wide, but they will agree on the length. W o 1 m=1 m 0.9c W
Page 1 and 2: Chapter 38A - Relativity A PowerPoi
Page 3 and 4: Special Relativity Einstein’s Spe
Page 5 and 6: No Preferred Frame of Reference Wha
Page 7 and 8: Platform as Reference West Frame of
Page 9 and 10: Velocity of Light (Cont.) Platform
Page 11 and 12: Time Measurements Since our measure
Page 13 and 14: Relative Time (Cont.) d c 2d t 0 t
Page 15 and 16: Proper Time The key to applying the
Page 17 and 18: The Twin Paradox Two twins are on E
Page 19: Length Contraction Since time is af
Page 23 and 24: Relativistic Mass If momentum is to
Page 25 and 26: Mass and Energy Prior to the theory
Page 27 and 28: Mass and Energy (Cont.) The convers
Page 29 and 30: Example 4: What is the kinetic ener
Page 31 and 32: Summary (Cont.) Relativistic time:
Page 33: CONCLUSION: Chapter 38A Relativity

Chapter 38A -- Relativity

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