The Science of Rollercoasters

If Ronan Keating is to believed Life indeed is a rollercoaster but what is the science behind their exhilarating/terrifying appeal?In this week's episode Luke answers a listener's request and plunges head first into the hows and whys of rollercoasters, the use of magnets and repulsion and why we keep going back to terrify ourselves silly.So strap yourself in, it's going to be a topsy turvy ride!