Recent content by leomarrg

I'm translating this question, it was given on a quiz it's original language is Spanish and i don't know if the correct term is clear for b, but essentially i want to know the value of b. That's what i mean by clear. Already have A, m, k, and φ

A * [e ^ - (b / 2m) t] * cos (sqrt (k / m - (b / 2m) ^ 2)) t + φ) A = 2m, k = 3N / m, m = 5Kg and φ = 0 clearing this for b. The complete exercise is on the first question. If t = 0 then cos (sqrt (k / m - (b / 2m) ^ 2)) t is going to = 0. the answer is 7.746 but i don't know how to get there...

x(0) = A? e^−b/m * 0 = 1, and cos(w * 0) = 1

my bad, was using the data given in the exercise, A?

I get 2

the equation is not equal not to anything (example: 3x = 6) and i don't know how to resolve [e ^ - (b / 2m) t].