[tex]T=4\,s\text{ (perioada de rotatie)}\\R=2\,m\text{ (raza traiectoriei)}\\\\\text{a) }\omega=\frac{2\pi}{T}=\frac{2\pi}{4s}=\frac{\pi}{2}\frac{rad}{s}\approx 1,57\,\frac{rad}{s}\\\\\text{b) } t=5T=5\cdot 4\,s=20\,s\\\\\text{c) }v=\omega R=\frac{\pi}{2}\frac{rad}{s}\cdot 2\,m=\pi \frac{m}{s}\approx 3,14\frac{m}{s}\\\\\text{d) }a_{cp}=\omega^2\cdot R=\frac{\pi^2}{4}\frac{rad^2}{s^2}\cdot2\,m=\frac{\pi^2}{2}\frac{m}{s^2}\approx4,93\,\frac{m}{s^2}[/tex]
