Name: How to Perform a Donut | Science of Stupid: Ridiculous Fails
Uploaded: 2020-11-07T18:45:09.000Z
Duration: 2 min 26 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

There are three kinds of donuts, sugary ring donuts,

sugary jelly-filled donuts, and then there are the ones that

Well, I can see why people pay money to watch this.

But take any friction fighting hijinks to the roads

and it's a serious hazard for motorists and for trees.

But off the road, and in the hands of an expert,

donuts are a masterclass in static and kinetic friction.

Our driver hits the gas hard and turns sharply.

overcome static friction between the tires and the ground,

so they become subject to kinetic friction,

The reduced grip allows centrifugal force

tricky to pull off, although not everyone seems to think so.

I mean this guy thinks he's got the science down,

but in fact he hasn't lost traction at his back tires

He's just using rollers, see, which does reduce the risk

of kinetic friction, burning up the tires,

Ah, the parking lot donut, using kinetic friction

and centrifugal force to drift into a space, like a glove.

Having successfully turned static friction

momentarily let up the power on those wheels

So, he stopped circling, and went straight.

Subtitles ListPlay Video

How to Perform a Donut | Science of Stupid: Ridiculous Fails

extremely

straight

tricky

force