# tutorial 2 v2.pdf - Name: Student Number: PHYS 200 TUTORIAL...

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Name:Student Number:PHYS 200 TUTORIAL 2For this tutorial, we’re going to derive the formulae for the special relativistic effects called“time dilation” and “length contraction”.The “Principle of Relativity”, and specifically the postulate that the speed of light is thesame in all frames of reference, has immediate consequences for measurements of space andtime in different frames. As you will see, observers in relative motion will not generallyagree on distances or time intervals.Recall that we have already showed that distances perpendicular to the direction ofmotion (i.e. they-axis in the “standard configuration”) are the same in the different frames.But this will not be true of distances measured along an axis pointing in the direction ofmotion (i.e. thex-axis).Question 1: Consider a simple apparatus consisting of twoparallel mirrors separated by a distanceL. A pulse of light isreflected back and forth between the two mirrors, as shownin the figure.Question 1(a): In the frame attached to the mirrors, howlong does it take for the light to go from the bottom mirrorto the top mirror and back?=
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Term
Fall
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NoProfessor
Tags
Spacetime