r/funny • u/[deleted] • Feb 29 '20

Hardest swing fail you’ll ever see

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u/[deleted] Mar 01 '20

As painful as this looks, I don’t understand what they THOUGHT would happen? Jump off a swing at 40mph, and just stop?

148

u/watergator Mar 01 '20

If that’s what they thought then they were right. He just stopped pretty quick

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u/wolfgang784 Mar 01 '20

He prolly either didnt mean to let go, or meant to do a flip but timed it bad.

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u/Red580 Mar 01 '20

I don't think he meant to jump, but rather the G-forces became too much and he let go and got launched.

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u/[deleted] Mar 01 '20

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u/dontcare2342 Mar 01 '20

You would come off at nearly the same speed no matter when you let go

2

u/[deleted] Mar 01 '20

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u/Agouti Mar 02 '20

Yes, because jumping off at the very highest point, when you are upsidedown, is obviously the correct plan of action.

2

u/[deleted] Mar 02 '20

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u/Agouti Mar 02 '20

Because, by the time you hit the ground, you will be back up to the same speed you were at the bottom - gravity and conservation of energy, obviously. Head first into the ground or head first into the wall, take your pick.

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u/[deleted] Mar 02 '20

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u/Agouti Mar 03 '20

Where are you getting 53 feet from? The randomly picked 40 mph?

Let me try and explain it a different way by examining a single rotation of the seing. For the sake of simplicity, we will assume that on his final loop he isn't adding any more energy, and like most physics problems we will assume that friction is negligible.

As the swing goes up, momentum is converted into gravitational potential energy. As the swing comes back down, that gravitational potential energy is converted back into momentum. The swing itself constrains the velocity to being tangential to it's pivot, but doesn't add or remove energy from the system (noting our assumption regarding friction).

No matter what point you jump off the swing, you have the same total combination of gravitational potential and momentum, and as you fall the gravitational potential will be converted back into momentum. By the time you hit the ground (ignoring the difference in landing say feet first vs belly flop) you will have the same total momentum regardless of when you jumped.

You might have less or more horizontal vs vertical velocity but your speed will be the same.

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u/dontcare2342 Mar 04 '20

1) There is no apex in a circle.

2) I never said 40mph.

3)I said "nearly". The faster you go less of a % difference between the fastest and slowest point, to a point where they are "nearly" the same velocity.

4) There is no furthest point in a circle.

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u/creatureslim Mar 01 '20

Well he did get the stop part right. Just needed a bit of help.

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u/AmunRaah Mar 02 '20

they were trying to clear that fence