How many vibrations does a metal ball make in 20 s, suspended on a thread 1.6 m long
| April 4, 2021 | education
t = 20 s.
l = 1.6 m.
g = 10 m / s2.
n -?
Let us express the period of the mathematical pendulum with the formulas: T = t / n and T = 2 * P * √l / √g.
t / n = 2 * P * √l / √g.
n = t * √g / 2 * P * √l.
n = 20 s * √10 m / s2 / 2 * 3.14 * √1.6 m = 8.
Answer: the mathematical pendulum will make n = 8 oscillations.
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