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May 1, 2013 at 12:40 comment added Jim it's taut, but the length isn't changing, that's what I meant.
Apr 30, 2013 at 22:02 comment added grjj3 Thank you very much, sir. I now see how my question was stupid! But why you say that 'rope isn't stretching'? I thought $F_1=F_2$ is because $F_1=ma$ and $F_2=ma$.
Apr 30, 2013 at 22:00 vote accept grjj3
Apr 30, 2013 at 21:15 history answered Jim CC BY-SA 3.0