What Happens When a Spinning Basketball is Thrown Off a Dam! 

Imagine going for a swim then seeing a random flying basketball speed past you

The people: Hey look you're flying! The ball: This isn't flying! This is falling, with style!

I wish you guys had the guy in the canoe recording so you can get the perspective of how it was flying down there.

"It's truly, truly been a roundabout path... Thanks Gyro."

It's called Magnus Effect. The same that applies to guns projectiles.

Let's drop a ball! 4 years later: let's drop a plane!

People r stealing this video! Has 12 million views on the fake video.

The beginning of a legend. You guys and the Magnus Effect have been glorious together!

saw this on twitter. ended up getting that moaning sound effect shit during the video lmfaooo

I never thought I would see a collaboration with this 2 channels, and I was already subbed to both of them, awesome

You know why you’re here.

The reason the ball makes this movement is because it produces lift due to the spin. The spin accelerates the velocity of the air above the ball more than on the bottom, creating a lower pressure zone at the top. This pulls the ball toward the low pressure zone which is forward when throwing the ball straight down (like on this video) and upward in a horizontal movement. Google spinning circle cylinder for more clarification.

Clickbait you stole the thumbnail from veritasium!

Topitoooo >

Veritasium brought me here.

Once again another awesome video. They ere some pretty crazy results. Keep up the great work

How much have they changed in the past years I’m in 2019 now

The shot when you dropped it without the spin is actually an example of the coreolis effect, so you technically had two effects in one video.

I peed a little bit when I watched this.

My basketball coach back in the 70s taught me to shoot free-throws underhanded, and explained that they go straighter when you do that. I believe Rick Barry shot that way as well.

0:55

I'm seeing this after watching their most recent videos. I think the change in the format is for the best : I really enjoy the latest stuff!

I kept seeing this vid on Facebook, followed by loud moaning

For some reason i was nervous of the height, but i realized it was a video.

lol just remembered this video in a dream and all I have to say is: "Great now do it again but jump off the dam with a front flip and see how far you'll spin!

The first one was a good demonstration of how a knuckleball works.

It skipped! :) They skipped a basketball! That takes some skills.

Dude today in our school teacher had shown this video for Bernoulli's principle of spin its awesome......

"The Weather Channel" website brought me here. Awesome video!

SO WOULD YOU PLEASE,PLEASE EXPLAIN THIS TO ME... You Get To This Place With Intention Of Throwing/Dropping Basketballs Down And Then You Only Bring Two Of Them ?!?!?! Dude if I was you, I would use my life savings to purchase basketballs and then throw them down all fuckin day long! And then when I eventually run out of them,I would start making damn paper planes !!!! WHAT A LACK OF FUCKING EFFORT AND INSPIRATION !!!!!

Great experiment! Unfortunately not as far as we expected. I would be curious how far it can go if you spin the ball with the most possible strengh. =)

That probably isn’t coriollis (as a lot of people in the comments say), but Bernoulli, or another external factor. I’ve made the calculations to get what would the angle be between what we expect (an straight line to the surface) and what we would get with the coriollis acceleration. Set a_0= -g j (This is the acceleration not taking into account coriollis) Then, we calculate the coriollis acceleration of a mass that it is at the same time accelerating (g). Let’s see if I can explain myself. Coriollis acceleration = -2W X V (Where W is the spin vector of the earth) And you calculate: | î j k. | |0. 0. 72.72*10^(-6)| |0. -gt. 0. | You multiplied by the scalar (-2) and you get that the coriollis acceleration is -1.426*10^(-3) î. (We already ser that it is sooooo small, but someone could thing, well, 150 meter are a lot,therefore it should desviate a lot ) Once we have this we have that the acceleration of the mass , taking into account coriolis should be : a_c=-gt j - 1.426*10^(-3)t î You integrate this function 3 times in order to get the position function and we get that û_c= (-g t^2)j/2 -(1.426*10^(-3)t^3)/6 You put t=5,53 s. (The time that something at 150m needs to reach the ground) And you get the position vector. The angle would be 0.01 degrees. Or 266.68•10(-6) rad. In other words, the body has only been deviated by 0.04 meter to the right ( î axis) this calculations are not taking into account the air friction, but as you can see that would only make the acceleration be even less. In other words, in the video we can see some what is probably the result of aerodynamic forces.

I came from the stolen video. sry.

0:56 That's what you came for Edit - Thanks me by liking this comment.

Oh damn, that's in Tassie. Haven't even been there

The sound when the ball hit the water is so satisfying.

This video is the first time I had seen (or heard of) the Magnus effect. It was a couple of years ago, and I thought it was interesting and left it at that. I recently rediscovered How Ridiculous and I am enjoying their videos quite a bit, but I would not have given them a second glance if they hadn't included this little bit of science. Greats!

This is the first video I ever saw from How Ridiculous. Its crazy how they are still doing stuff like this!

Came here from Veritasium

Make the vertical axis horizontal and you can think of it like baseball. A four-seam fastball is thrown with backspin so the seams give it a slight rising action. A knuckleball is thrown with as little spin as possible, which has led to one of its names being "The Dancer." Only one MLB pitcher can throw a knuckleball (R.A. Dickey), because it's hard for coaches to teach, hard for pitchers to master, hard for a catcher to keep a glove on, but even harder for a batter to make contact on. That's all due to the ball just wafting along at the whim of thermodynamics. Now, if he had put topspin on the ball, a la a curveball, and thrown it outward away from the dam, it would have curved back towards the dam and either lightly skimmed off, or would just roll down the wall. All of this gives me ideas of how we could spin an asteroid to make it bounce off our atmosphere instead of falling on us.

Watched this on NZ tv last night - awesome idea you guys and well done for thinking of this concept and also for your charity work! Best wishes for the future!

That spinning basketball... liked like it was flying!

This must be how Galileo felt when he experimented with Gravity!

Dang. Who knew that adding a bit of spin can dramatically change the ball's path? Landing the world record shot must have been a lot harder than I thought (as if throwing a ball into a hoop 100+ meters wasn't hard enough).

Bro. Already saw this. It was on Veritasium.

Having recently arrived in the viewership of HR it's so weird to hear such a subdued voice. I'm so used to the shouting. 😂

Selling replays! 0:02 1:01 2:00 That’s all we have in stock.

Now this is how muskets and rifles work. Muskets : No spin, unpredictable spread. Rifles : predictable spread with a forced spin.

they should have spun one the other way. like a rifle bullet.

Moment of a force we call it torque.

Well, I guess i'll go try this with my BODY!!

would be so cool to see different spins instead of just the backspin! great video though

i dont get why they dont have more subs they deserve it for their hard work...

One of the first videos I ever watched

GTA is real

I’m seeing this in my recommendation just now and I live in Tassie and I was there a few weeks before you posted this video aha

Moi je viens là à cause de Topito

I'm Australian too :D Finally, someone is using metres and not feat!

Topito !!

does the magnus effect the acceleration of the ball, like does it cause the ball to fall slower?

aime si tes la grace a topito

what about trying it with the spin axis in line with gravity to demonstrate stabilization?

Qui est la grâce a Topito ?

Barnes Wallace would have been proud of you fellas!!

anyone here because they want to hear the noise not stupid moaning shit that probably woke my full house up

This is MAGNUM EFECT!

topito

0:58 wow thats bloody mental

Skyrim... Magnus... winterhold....

Corialis Effect is the reason the first one went to the left. You were facing south so it went to the west.

EVO I MENE TAMO DOLE :D

Just realised you have a West Coast Eagles jacket on, respect man

Topito ^-^

it would be good if you could use the magnus effect to do a trick shot or have him down there in the boat catch it

vids stole this video

Learned this as a kid playing nerf basketball. You have to shoot it with backspin to keep it straight.

In their original clip they showed themselves spinning the ball with both front and back spin. They have edited that part out to make the theory work in the video. They did both front and back spin and both went over the lake when the front spin should have curved towards the dam. Creative editing will make them famous but science makes them FOS.

Wow what a bounce effect

i succ hi

The very first one could also demonstrate Coriolis Effect, isn't it?

Dude Perfect beat you guys, not to make you cry or anything, but, yeah.

1 million + views with 11 comments. Wow that's something NEW.

topito :D

Guy in the canoe 🛶: "You hit me with your ball, and we'll see if my bullet goes straight or not."

Do girls fart?

Saw this exact video on weather gone viral explained alittle as to why the basketball did what it did, thought that was pretty cool lol

Cool. Good to see they did recover the balls.

Damn this video was insane!

_"Whoooah, look at it geeooooh!"_

What happens if you throw the ball away, but spin outwards too? Would it got the dam wall or cancels out mid way and fall straight?

Totally forgot about this.

Thats cool thanks for the vid! Its just like hitting a golf ball and giving it some back spin!

So... if I jump of a dam doing backflips I will fly?

Awesome guys great job

How do you look older in this video than you do now?

Ce / cum se va întâmpla: 1. în lipsa aerului? 2. în lipsa gravitației? 3 în lipsa ambelor (aer+gravitație)?

And there you have two baseball pitches in a nutshell!

watch this vid for my science class! we loved it!

Thats amaizing

Imagine some mountain climber down there gets hit by a basketball