This is the problem: Train tracks are made of metal. They expand when the weather is hot and contract when it's cold. Normally tracks are set down with gaps between, giving them room to expand and contract. Consider one mile of track that is laid in one piece, nailed solidly to the ground at both ends, with no gaps. This track will expand by two feet in the heat and it will buckle in the middle. Use what you know about right triangles to determine how far off the ground the middle of the track will be.
My calculations give me: 145.341 ft. Is this right or wrong? (if wrong point me in the right direction please!!)
2007-03-27
14:39:31
·
4 answers
·
asked by
platypus
2