Ex-Gov. Phil Bredesen takes the elevator down from the Neyland Stadium skyboxes.

Question

Ex-Gov. Phil Bredesen takes the elevator down from the Neyland Stadium skyboxes. Having earned a physics degree from Harvard, the good ex-governor makes some measurements while riding down the elevator. He stands on a scale and notes various readings. The ex-governor has mass of 76 kg. The mass of the elevator and the other occupants is 760 kg.

a)The ex-governor also makes some time measurements. He notes that the initial acceleration as the elevator starts down lasts for 1.5 seconds and that the elevator goes at a constant speed for 8.3 seconds before it begins to slow down at the bottom. Phil does a quick calc, and determines the distance the elevator traveled. What number did Phil calculate, assuming Phil worked the problem correctly? (m)

Explanation / Answer

F=m(g+gy) 423N=75kg(9.81m/s^2+gy) gy=4.17m?s^2

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