2006-11-13 05:58:51 · 4 answers · asked by Amanuel Z 1 in Science & Mathematics ➔ Physics
The perimeter = 2 pi r = 5027 meter.
perimeter = speed x revolving time
5027 meter = (100,000 meter / 3600 s) x time
Revolving time = 181 s = 3,0 minutes.
Constant centripetal force = mv2/r =
4000 kg x (100,000 meter / 3600 s)^2 / 800m = 3858 N = 3.86 kN
Th
2006-11-13 06:12:14 · answer #1 · answered by Thermo 6 · 0⤊ 0⤋
The centrifugal force on the train = mv^2/r
100 km/hr x 1000 m/km x 1/3600 hr/sec = 27.8 m/s
centrifugal force = (4000 kg x 27.8^2)/800 = 3864.2 Newtons
2006-11-13 14:10:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋
I believe the part you are missing is the quantitative result you are seeking. Is it the amount of time to traverse the circle or perhaps the amount of time it will take the train to come to a rest or perhaps the ratio of speed to decline as it slows down?
2006-11-13 14:07:54 · answer #3 · answered by Marvinator 7 · 0⤊ 0⤋
Choo! Chooo!
What is the question?
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2006-11-13 14:02:09 · answer #4 · answered by DanE 7 · 0⤊ 0⤋