[tex]Dane:\\d = 50 \ cm \ \ \rightarrow \ \ r = 25 \ cm = 0,25 \ m\\n = 5\\t = 2,5 \ min = 2,5\cdot60 \ s = 150 \ s\\Szukane:\\a) \ f = ?\\b) \ v = ?\\c) \ a = ?\\\\Rozwiazanie\\\\a)\\f = \frac{n}{t}\\\\f = \frac{5}{150 \ s}\\\\\boxed{f \approx0,03 \ Hz}[/tex]
[tex]b)\\v = \frac{2\pi r}{T} \\\\T = \frac{t}{n} = \frac{150 \ s}{5} = 30 \ s\\\\v = \frac{2\cdot3,14\cdot0,25 \ m}{30 \ s}\\\\\boxed{v =0,05\frac{m}{s}}[/tex]
[tex]c)\\a = \frac{v^{2}}{r}\\\\a = \frac{(0,05\frac{m}{s})^{2}}{0,25 \ m}\\\\\boxed{a = 0,01\frac{m}{s^{2}}}[/tex]
