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High on physics

High on physics

(0:49) Physicist Andreas Wahl knows that things rotate faster when they approach a central point. To prove it, he will drop 14 metres towards the ground - attached only to a loose rope with a smallish weight at the other end.

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Guest: one more time (705 days ago)

Don't think the faster rotation is very relevant - it's the friction of the rope wound round the pole that slowed him down.

More to the point, how does he get down to ground level?

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Don't think the faster rotation is very relevant - it's the friction of the rope wound round the pole that slowed him down.

More to the point, how does he get down to ground level?

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Guest: (705 days ago)
Latest comment:

What? The friction of the rope obviously increases with the number of times it winds around the pole. Are you trolling or just dim?

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Latest comment:

What? The friction of the rope obviously increases with the number of times it winds around the pole. Are you trolling or just dim?

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Guest: (705 days ago)

Uhhhh. You don't think maybe the speed of the rotation (and therefore the increasing amount of rope in contact with the pole) has an effect on the friction of that rope? Back to school.

More to the point, great demonstration to anyone that can understand physics.

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Original comment

Uhhhh. You don't think maybe the speed of the rotation (and therefore the increasing amount of rope in contact with the pole) has an effect on the friction of that rope? Back to school.

More to the point, great demonstration to anyone that can understand physics.

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COncernedCitizen COncernedCitizen (705 days ago)

Probably considered by some a stupid way to demonstrate the physics. He missed one important factor and that's the speed he will fall and how quick he will stop. The amount of Gs he sustained in that sudden stop could have caused permanent injury to his back or other fragile body parts. This is why people don't use regular ropes when they bungie jump, they use materials that are more elastic to spread the stopping force into a longer period of time.

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Original comment

Probably considered by some a stupid way to demonstrate the physics. He missed one important factor and that's the speed he will fall and how quick he will stop. The amount of Gs he sustained in that sudden stop could have caused permanent injury to his back or other fragile body parts. This is why people don't use regular ropes when they bungie jump, they use materials that are more elastic to spread the stopping force into a longer period of time.

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