Timeline for A 600 foot Rope, and an 800 foot Drop
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 19, 2015 at 13:44 | comment | added | Taemyr | @The111 At what point does the solution require you to tell when the rope reaches the ground? | |
| May 19, 2015 at 7:35 | comment | added | Flater | @The111: At no point in this answer is it required to see far into the distance. Knowing it's a 600ft rope, and a 400ft ledge on a 800ft building is enough to intellectually solve this. Regardless of you climbing down to cut the rope, or dividing it into thirds on the roof. | |
| May 18, 2015 at 18:54 | comment | added | The111 | @Flater if you can't tell when the rope reaches the ledge (from the roof), then neither can you tell when it reaches the ground (from the ledge). Same distance and same perspective in each case. | |
| May 18, 2015 at 9:12 | comment | added | Flater | @The111: Arguably though, you can't see that clearly whether the rope is just above, below or of equal height to the ledge; if you are hanging it down to measure it against the ledge. Given how you can only miss by +- 5 feet, it might lead to your final descent coming up short. | |
| May 18, 2015 at 1:34 | comment | added | The111 | @Joshua the distance from the roof to the ledge is 400ft. That is your measure, and it is identical to using the ground as your measure when on the ledge. | |
| May 17, 2015 at 21:33 | comment | added | Kevin | @Joshua It still wouldn't be that difficult to figure out. You could simply fold the rope into thirds (or, if there isn't enough space on the roof, sixths) in order to find 200 feet of rope. Each fold would be 200 feet long when the rope is folded into thirds. | |
| May 17, 2015 at 21:29 | comment | added | Joshua | @The111: Because you don't have a measure. | |
| May 17, 2015 at 15:20 | vote | accept | Mike Earnest | ||
| May 17, 2015 at 2:52 | comment | added | Kevin | @The111 You're right, but I'm trying to exercise more and I'll take any excuse I can get. ;-) | |
| May 17, 2015 at 1:18 | comment | added | The111 | Why the initial descent and climb? It seems all you accomplish out of that is turning your rope into a 200/400 split, but you can do that without ever leaving the roof! | |
| May 17, 2015 at 0:11 | comment | added | Trevor Powell | A very minor improvement to this answer: tie the ends of the 400-foot rope together, after threading it through the loop in the 200-foot rope. This makes it a lot safer to descend, since it ensures that both sides of the rope will descend the same distance. Once you're on the ledge, you can cut the loop to turn it back into a straight rope usable for making the final descent. | |
| May 16, 2015 at 22:55 | comment | added | Rand al'Thor | Looks like you've got it! Very similar idea to my answer, but yours works slightly better. | |
| May 16, 2015 at 22:55 | comment | added | Joffan | Well played, I knew there was a cut-and-loop solution there somewhere. I'm still cutting at the door to get inside. Think how disappointed you'll be when the distance to the ground is actually 10' more than the distance to the ledge :-) | |
| May 16, 2015 at 22:49 | history | answered | Kevin | CC BY-SA 3.0 |