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austim14
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βI solved this problem but I do not know if it is correct becasue there is no way to check it:
Imagine that we define the rear end of a train 120 m long to long to define the origin X'=0 in the train frame and we define a certain track signal light to define the origin X=0 in the track frame. Imagine that the rear end of of the train passes this sign at t+t'=0 as the train moves in the +X direction at a constant speed of 25 m/s. 12 seconds later, the engineer turns on the train's heasdlight. A) Where does this event occur in the train frame? B) Where does this event occur in the track frame
Use Galilean transformation equations for position. β is the contstant velocity.
t=t'
x'=X- β*t
Here is my work: 25m/s*12s=300m
300m+120m= 420m
Train Frame 420m
420m=X-300m
X=720m
Track frame 720mIs this correct?
Imagine that we define the rear end of a train 120 m long to long to define the origin X'=0 in the train frame and we define a certain track signal light to define the origin X=0 in the track frame. Imagine that the rear end of of the train passes this sign at t+t'=0 as the train moves in the +X direction at a constant speed of 25 m/s. 12 seconds later, the engineer turns on the train's heasdlight. A) Where does this event occur in the train frame? B) Where does this event occur in the track frame
Homework Equations
Use Galilean transformation equations for position. β is the contstant velocity.
t=t'
x'=X- β*t
The Attempt at a Solution
Here is my work: 25m/s*12s=300m
300m+120m= 420m
Train Frame 420m
420m=X-300m
X=720m
Track frame 720mIs this correct?
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