When railroad tracks make a curve, the outer track is longer. This means a wheel that rides on the outer track needs to somehow Group of answer choicesroll faster than the wheel on the inner track.maintain the same speed as the wheel on the inner track.roll slower than the wheel on the inner track.Not any of these will happen because the wheels are balanced

The same rules apply to trolley and light rail crossings that apply to train crossings.

When rounding a curve, a car tends to:Options: Speed up. Move to the inside of the curve. Stay in the center of the lane. Move to the outside of the curve.

Design: Track engineers are involved in designing railway tracks to ensure safe and efficient movement of trains. This involves determining track alignments, gradients, curves, and other parameters to meet operational requirements and safety standards.

In this problem you will consider the motion of a cylinder of radius rcyl𝑟cyl that is rolled from a certain height hℎ so that it "loops the loop," that is, rolls around the track with a loop of radius rloop𝑟loop shown in the figure without losing contact with the track. (Figure 1)Unless otherwise stated, assume that friction is sufficient that the cylinder rolls without slipping. The radius rcyl𝑟cyl of the cylinder is much smaller than the radius rloop𝑟loop of the loop.Figure1 of 1Part ACompared to an object that does not roll, but instead slides without friction, should a rolling object be released from the same,a greater, or a lesser height in order just barely to complete the loop the loop?View Available Hint(s)for Part AThe rolling object should be released from a greater height.The rolling object should be released from a lesser height.The rolling object should be released from exactly the same height.The answer depends on the moment of inertia of the rolling object.SubmitPart BFind the minimum height hℎ that will allow a solid cylinder of mass m𝑚 and radius rcyl𝑟cyl to loop the loop of radius rloop𝑟loop.Express hℎ in terms of the radius rloop𝑟loop of the loop.View Available Hint(s)for Part B

There is something called “fluid friction.”  Remember that a fluid is something that flows, like air or water.  The fastest trains in the world ride on a cushion of air.  Use what you learned today to write a hypothesis about why those trains can go so much faster than the trains we have here in the Unites States.