The center of the rail would rise approximately ? meters above the ground.?

Suppose a railroad rail is 5 kilometers and it expands on a hot day by 15 centimeters in length. Approximately how many meters would the center of the rail rise above the​ ground? 

4 Answers

Relevance
  • Dale-E
    Lv 7
    1 month ago

    The secret to understanding the result is in a construction method and material that prevent the rail from rising in the middle. If it is loose rail, it only gets measurably longer. Properly installed rail, might kink a little bit, is all. But normally not enough to be a problem. If there is a weak spot in the cross ties (Sleepers) spike may be shoved loose and the rail slip sideways. Over time that can get dangerous. When operators feel an odd movement they are supposed to report it. Track supervisors also routine the tracks with a light rail car that is sensitive to irregularities, along with the Road Master's experienced eyes.

    • Login to reply the answers
  • 1 month ago

    None it's expanding in length, not height.

    • Login to reply the answers
  • Anonymous
    1 month ago

    It will go back down when a train passes through it.

    • Login to reply the answers
  • Anonymous
    1 month ago

    growth in the rail = 5000 m * coefficient of expansion for steel * temperature change.

    Treat it as two triangle.  Base for 1 triangle is 2500 m.  Hypotenuse is 2500 m + 1/2 of the expansion.  Use the Pythagorean theory to find the height.

    • Login to reply the answers
Still have questions? Get your answers by asking now.