I get a minimal top of two.5R. So if the loop is 4 meters excessive (with a radius of two meters), the automotive must begin 5 meters above the bottom to simply make the loop. After all, this assumes there is not any power loss resulting from friction; you’d most likely wish to begin a bit increased to account for that.
However Not Too Excessive …
In reality, why reduce it shut? Why not simply begin a lot increased and eradicate all doubt? The reason being that the quicker the automotive goes, the upper the g-forces skilled by the driving force within the loop.
Let’s take into consideration this: In case you launch a automotive in order that it goes across the loop at minimal velocity, there shall be zero drive from the observe (FT). You’d really feel weightless—zero g’s—for an prompt. If the automotive is launched from a top larger than 2.5R, its velocity can be larger than the minimal on the high of the loop. As a way to nonetheless transfer in a circle, the gravitational drive wouldn’t be sufficient. The observe would additionally need to push down on the automotive. This could create a g-force larger than zero.
Let’s return to the video of the true stunt. By evaluating the loop to the bystanders, I am guessing it has a radius of two meters. The automotive is clearly launched from a top above the 5-meter minimal—for example it is 8 meters. The drive on the high of the loop (divided by the load, to get it in g’s) can be 3 g’s. It is attainable for people to resist as much as 20 g’s, so this must be tremendous.
However for those who go excessive? In case you begin too excessive and make the loop too small, unhealthy issues can occur. What a couple of top of 20 meters with a 1.5-meter radius for the loop? This could produce a drive of 21 g’s. It would look cool, nevertheless it additionally would possibly kill you. That is not enjoyable anymore.
