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If you've stood beside the tracks when a train is passing at speed, you might have felt the ground shake with the weight of the train. The faster it goes, the more the ground shakes.
To save the bridge from being shook up that much, the train slows down.
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∙ 12y ago
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Why do people lift their feet while crossing a bridge?
It used to be 'cute' and funny to raise your feet while crossing a bridge 'so you wouldn't get your feet wet'. It makes no sense, but some people like to do it just for fun.
How do you go overGeorge Washington bridge in a semi truck?
Very carefully. That is a bridge you absolutely do not want to miss a gear on while crossing it.
Why are soldiers ordered to break their footsteps while crossing a suspension bridge?
A common myth, that a large group marching in step could collapse a bridge.
How can you measure the speed of the train while standing on the platform with a device?
All you need is a speed-gun of some sort,to measure the speed.
Would someone walking toward the back the train have greater or lesser speed relative to yo?
If you are just chilling on a train and somebody is walking towards the back of the train while the train is moving forward they would have less speed relative to you.
Is the acela train a bullet train?
No. The high speed Acela train has a maximum speed or 150 mph on sections between New York City and Boston, MA, with a section in NJ with a maximum speed of 135mph. For all other areas, its maximum speed is no higher than 125mph. While there are improvements authorized by the government to increase its speed, it is not generally referred to as a bullet train.
Would you enter a railroad crossing if the flashing lights are activated?
Not unless you want to be Killed or Injured for life. A lot of people have tried to beat the train to the crossing and it was the last thing they Ever did. Train Versus Human = Train 1 - Human Nothing but blood and guts. * Added - In all US states, the flashing lights activated means stop prior to entering the crossing. If there are no crossing gates, most US states allow you to proceed after stopping and checking to be sure no train is approaching. If there are crossing gates as well, it is not legal to drive aroound the gates or through the crossing while the gates are going up or down in any state in the US.
Why soldiers are told to not march while crossing abridge?
Harmonics. Most bridges are strong enough to support the weight of soldiers marching in lock step, but the constructive vibrations still hasten the need for repairs. Harmonic vibrations induced by the wind brought down the Tacoma Narrows Bridge, "Galloping Gertie."
What can you do to improve your chances of hearing a trains whistle?
maybe to turn all loud music and sounds off while near a railroad crossing. Always pay attention and lilsten to if you hear a train. Never turn your back from a train while walking on it.
What are the uses of a gear train?
Either to increase speed and reduce torque or to decrease speed and increase torque while conserving mechanical energy.
Who was the Verrazano-Narrows Bridge named after?
The bridge is named for Italian explorer Giovanni da Verrazzano, the first known European navigator to enter New York Harbor and the Hudson River, while crossing The Narrows. Source: Wikipedia
One percent of railroad crossing crashes result from people driving into the side of a train?
One percent of railroad crossing crashes result from people driving into the side of trains while the rest involve the train hitting cars. This is due to the trains inability to stop without considerable advance notice and distance.
