A train with six 80 K cars accelerates from a station at 4 ft/sec2. a What...

A train with six 80 K cars accelerates from a station at 4 ft/sec².

a What torsion “T” is exerted on the support structure? What torsion is applied if another train coming into the station on the opposite track decelerates at the same rate?

b A 40’ wide, 5’ deep beam with top 30’ above street level supports the tracks beyond stations. To clear traffic and to light the street, it is a hammerhead supported by a 6’ diameter, 20’ tall solid reinforced concrete column (“J”). For the trains accelerating in opposite directions, find t _max and angle of twist qat z = 0 ground level, using height L= 20’. The “J” of the hammerhead, beam and taper is ginormous.

Expert Solution

Ally Wells answered 7 hours ago

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