![]() That force pushing you out, is holding your bike onto the wall. That's pushing you out onto the wall of death. 'And Dr Hunt, is gonna show us how it works.' 'So we're off to Cambridge university, where Newton studied.' But before we do our challenge, we've got to learn how the bike will stay on the wall.' It involves motor cyclists defying gravity by riding around circular, vertical walls. 'Riding the wall of death is a daredevil stunt that dates back to the early 1900s. We are going to defy gravity in what is quite cosily known as - The Wall of Death. Now we're ready to take on gravity itself.' 'We've seen g-force make Dom go very heavy. 'He's done it! Dom's made it up to 2.6g in the human centrifuge.' It feels like this bag is made out of solid metal. My cheeks are really coming down now I'm having to push against the floor to stop blacking out. 'At 2.6g, the centrifuge will make Dom weigh around two and a half times his normal weight.' So this time, they're starting out a lot slower, so he gets used to it. If I'm going to be honest, I can't bear it but let's do it one more time. Some people experience blackouts or g-lock. It makes their bodies feel incredibly heavy, with the blood inside pulled downwards. 'A human centrifuge is used to test the effects of g-force on the body - the kind of g-force experienced by jet pilots.' 'We want to experience some proper g-force so one of us is about to go on this - the human centrifuge and it's not going to be me.' You look quite nervous now to be honest. Yeah, he should be getting heavier when you speed up and when you slow down he should be getting a bit lighter. Newton, is speed him up and slow him down and that'll subject him to like different pushes and pulls and it should change his weight. And we can see how much he weighs on these scalesĪnd what we're gonna do to Mr. Here on earth gravity is what it is, we can't really change it but what we can do is there's another way to change your weight by changing like the push and pulls on your body and that's called g-force. Is there any way, by science, you can make me lighter? Well, first of all, step on the scales Dom. We've been learning about gravity but we want to know how gravity affects us as people. 'And he discovered gravity's force even tugs on the moon keeping it orbiting the earth. He realised it's a pulling force that makes apples fall to the ground and stops people floating off into the sky.' 'Newtons genius idea was in understanding how gravity works. ![]() Well it did for Isaac because he started thinking why did the apple go downwards instead of upwards or sideways? He started to think that there was some kind of invisible force that was pulling the apple and everything else towards the ground and this force was gravity. 'But it was here where he began to make his ground-breaking discoveries about gravity.' And with this apple, well not this apple, the original's a bit mouldy by now but with an apple. 'Newton made many advances in our understanding of the universe, maths and physics.' It was the early days of modern science.' 'Newton was born in 1643, when the laws of nature and the universe were a big mystery. ![]() Ladies and gents we give you, the man who discovered how gravity works - Sir Isaac Newton. Today we're going to introduce you to one of the greatest scientists ever to live.Ī genius who helped uncover the invisible force that controls not only how everything in the world moves but everything in the universe.
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