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amcavoy
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This isn't a HW question, just a thought. If I held a rock in my hand and connected it to a rope which I held in my other hand, then dropped it off of a cliff, how heavy would it "feel" when the slack ran out?
I know that the force is the same the entire way down, but when the slack ran out there would be a tension force going upwards towards me. However, it is obvious that it has to do with more than the acceleration, which would assume the tension of the rock just sitting there, not having been dropped.
Is it something to do with momentum? I know p=mv, so If I replaced v with at, I come up with p=m(at). How can I find the tension knowing the momentum?
Thanks for your help.
Alex
I know that the force is the same the entire way down, but when the slack ran out there would be a tension force going upwards towards me. However, it is obvious that it has to do with more than the acceleration, which would assume the tension of the rock just sitting there, not having been dropped.
Is it something to do with momentum? I know p=mv, so If I replaced v with at, I come up with p=m(at). How can I find the tension knowing the momentum?
Thanks for your help.
Alex