Częstotliwość f:
[tex]f=\frac{n}{t}[/tex]
Okres T:
[tex]T=\frac{t}{n}[/tex]
t- czas, n- liczb drgań
a) n=40, t=1min=60s
[tex]f=\frac{40}{60s}=\frac{2}{3} \frac{1}{s}=\frac{2}{3}Hz\\\\T=\frac{60s}{40}=1,5s[/tex]
b) n=80, t=2min=120s
[tex]f=\frac{80}{120s}=\frac{2}{3} \frac{1}{s}=\frac{2}{3}Hz\\\\T=\frac{120s}{80}=1,5s[/tex]
c) n=72, t=160s
[tex]f=\frac{72}{60s}=1,2 \frac{1}{s}=1,2}Hz\\\\T=\frac{60s}{72}=\frac{5}{6}s[/tex]
d) n= 150, t 1min=60s
[tex]f=\frac{150}{60s}=2,5\frac{1}{s}=2,5}Hz\\\\T=\frac{60s}{150}=0,4s[/tex]
