GetAClass - Physics

Derek Muller on the Veritasium 42 channel showed an amazing wind-powered car: https://youtu.be/jyQwgBAaBag that can travel faster than the wind speed. First, the wind pushes the car from behind, its wheels start moving, and the transmission transfers this rotation to the propeller, which pushes the air backward like an airplane propeller and accelerates the wind car.

But if the wind car has reached the speed of the wind, the air relative to the propeller is stationary and can no longer accelerate it. And if the car goes faster than the wind speed, the airflow will hit the propeller not from behind, but from the front, and it seems that now it will slow down the wind car. And yet this remarkable device really does travel faster than the wind speed! How is this possible?

In today's video, we will begin to figure this out and look at some similar, but simpler and more understandable devices, the operation of which, nevertheless, raises new questions. Watch our new video “Against the wind and faster,” think along with us, and don't forget to like it!

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1 month ago (edited) | [YT] | 14