Seemed like every day something would go on the ground.Hello, and welcome to this video about cylinders! In this video, we will explore how to find the volume and surface area of any cylinder. We used to listen on the scanner some times at the train club, one of the members was an engineer on the PBNE when the Bethlehem plant of Bethlehem Steel was still operating, at least in some capacity. Poor trackwork makes it even more likely. These spots also require very slow speeds - the flange won't really be able to hold the wheels on the rail if enough force can be generated between the flange and the rail, it will lift right up. But they don't usually rub continuously except on very sharp curves, and it's very obvious as an annoyingly loud squeel. The flange does help guide things back - if the curve is too sharp, the wheel will want to shift even more on the conic section which would push the wheelset completely off the rails, the inside wheel inside the rail, as the wheel tried to move to even a smaller diameter area past the face of the wheel, and the outside wheel outside the rail as it tried to climb to a larger diameter past the inside edge. The singing is the flanges momentarily hitting the rail - if the flanges actually rode continuously against the rail it would be more of one long continuous screech.

And yet this incredibly brilliant guy sounds like a brawler from the heart of Brooklyn. Had he been lecturing, I never would have had to drop the quantum physics class I took in college. There's a series of talks he gave at Cornell on various aspects of partical physics that are on YouTube and quite understandable. Of course, no one compares to Fenyman when giving a lecture.

At any speed, until inertia overcame friction, it faithfully followed the curve in the track. Next he took a piece made of two cones glued together, fat part in the middle, tapers outward. Of course, it hit the curve and apart from a slight deflection, ran right off the table. He laid out a J shaped section of track and rolled a cylinder down it, starting on the straight vertical leg of the J. Richard Hammond (you might know him from the original British Top Gear show) did another show on engineering marvels, and in one episode demonstrated very clearly that it's the wheel taper adn not the flange that keeps the train on the track.

21 inch radius what is the area