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It is nice to go fishing again?
A shark in the ocean, initially hanging motionless on a spring scale
is suddenly whacked by a meteorite of equal mass. The resulting
motion of the shark is given by: f(t)=e^(-[π/200]t)sin( [(a+b]/a)/8] * t) = δ(t)
where a / b = (a+b) / a and (a,b) are segments of a straight line.
What is the mass of the meteorite?
Thank you.
There is an answer.
1 個解答
- Steve HLv 510 年前最愛解答
Looking at this only briefly it looks like a damped oscillator problem that you need to tie together with a conservation of momentum calculation for the collision between meteorite and shark.
And the a,b business just looks like a way to put in the golden ratio ... if memory serves [a+b]/a ought to be 1.618 or so.
Whoever dreamed up this problem must have been up too late grading exams.
