train question

Feb 2016
8
0
Bedfordshire
Q: Screenshot
w/o for (iii): Screenshot
How part ii looks in the answer section: Screenshot

I don’t understand why the diagram is the other way around with T1 in front of the engine and T2 at the back of B.
 
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skeeter

Math Team
Jul 2011
3,360
1,850
Texas
$T_1$ pulls backward on the engine and forward on car A, just as $T_2$ pulls forward on car B and bacward on carA.

Both tensions exert a force in both directions as determined by Newton’s 3rd law.

the diagram below shows another example ...

B9976D82-4CAF-4BB7-B33C-B9726762A0A3.jpeg
 
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