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Dec 11, 2021 at 21:54 history edited Wreckless CC BY-SA 4.0
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Dec 11, 2021 at 21:53 comment added Wreckless The you tube video is nothing other than a demo of slingshots. However, further reading shows that I have misunderstood this concept and my answer above is incorrect.
Dec 11, 2021 at 14:50 comment added anna v see youtube.com/watch?v=FaQRNj0WpYU
Dec 11, 2021 at 14:49 comment added anna v If the rope rotates its because the user provided by his momentum the impulse due to not stopping the rotational motion. Moemntum conservation goes -mv to the mv of the shot, but the person and the earth to which the user is attached are so massive that it easily takes up the momentum -mv. That -mv by definition has an angular momentum to the rotation center, and it is the negative of the one leaving.
Dec 11, 2021 at 14:01 comment added Wreckless Please illustrate how that is true. The user will remain standing. and the sling 'rope' will temporarily continue rotating in the original direction.
Dec 11, 2021 at 13:57 comment added anna v At the point the mass leaves in the tangential direction the conservation of momentum moves the sling and user . which go in the opposite direction and that reaction should also add up to conserve angular momentum
Dec 11, 2021 at 13:00 history answered Wreckless CC BY-SA 4.0