Timeline for Pulling the rope with one hand is as heavy as with two hands?
Current License: CC BY-SA 4.0
25 events
when toggle format | what | by | license | comment | |
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Mar 10, 2022 at 5:46 | history | edited | athin | CC BY-SA 4.0 |
added 3 characters in body
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Apr 29, 2019 at 4:55 | answer | added | piojo | timeline score: 2 | |
Apr 28, 2019 at 2:20 | answer | added | Alec | timeline score: 3 | |
Apr 27, 2019 at 1:45 | comment | added | Mazura | Then the accepted answer would need a second [thing] and a knot that would fit through it. What you presume to be weight is actually resistance. | |
Apr 27, 2019 at 0:15 | comment | added | athin | @Mazura the box is not moved at all | |
Apr 26, 2019 at 22:30 | comment | added | Mazura | Did the box move half a foot when you pulled the rope a foot?... | |
S Apr 26, 2019 at 15:28 | history | suggested | Nuclear Hoagie | CC BY-SA 4.0 |
Changed reduction in weight to a change in exerted force, as the weight of an object doesn't change
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Apr 26, 2019 at 15:10 | review | Suggested edits | |||
S Apr 26, 2019 at 15:28 | |||||
Apr 26, 2019 at 15:04 | comment | added | Nuclear Hoagie | @athin OK, so what's actually happening is that the box weighs twice as much (not the same amount) when pulling both ropes compared to when pulling with either rope individually. Because the weight of the box doubles when using both arms, the force exerted by a single arm is identical in all 3 cases (left arm, right arm, both arms). | |
Apr 26, 2019 at 14:54 | comment | added | noedne | @NuclearWang You should expect the total force to remain the same, so the force for each hand should be halved. | |
Apr 26, 2019 at 14:49 | comment | added | athin | Hm I should write a better words.. What I mean is that if a weight is tied to both ropes, when I use my both hands indeed the weight is the same but the force (or power?) to pull them should be halved. But here, same. Maybe my previous comment should clarify this >< | |
Apr 26, 2019 at 14:43 | comment | added | Nuclear Hoagie | I agree with @noedne, I don't understand why this is unexpected. I can tie any object to two ropes, and its weight doesn't change if I lift it with one hand, the other hand, or both hands. Why is a weight tied to two ropes an "amazing contraption"? | |
Apr 26, 2019 at 14:02 | vote | accept | athin | ||
Apr 26, 2019 at 13:35 | answer | added | cinico | timeline score: 1 | |
Apr 26, 2019 at 13:10 | answer | added | user59880 | timeline score: 5 | |
Apr 26, 2019 at 11:35 | answer | added | cinico | timeline score: 4 | |
Apr 26, 2019 at 11:13 | history | became hot network question | |||
Apr 26, 2019 at 11:03 | answer | added | Bass | timeline score: 18 | |
Apr 26, 2019 at 10:47 | answer | added | hexomino | timeline score: 12 | |
Apr 26, 2019 at 10:45 | answer | added | noedne | timeline score: 19 | |
Apr 26, 2019 at 10:35 | comment | added | athin | @ArnaudMortier The measurement can be exact. Say, you need $x$ Newton to perform those $3$ pullings. (Well, for the third one, it should be $2x$ Newton in total as using both of hands $= x + x$.) | |
Apr 26, 2019 at 10:34 | comment | added | athin | @noedne Given the final contraption, it's expected to behave as the story. | |
Apr 26, 2019 at 10:31 | comment | added | Arnaud Mortier | @noedne Ten people can lift a small car, one person cannot. | |
Apr 26, 2019 at 10:30 | comment | added | Arnaud Mortier | Do you measure how hard it is to lift the weight or to keep it in a high position, or both? | |
Apr 26, 2019 at 10:21 | history | asked | athin | CC BY-SA 4.0 |