[tex]F_{d} = \frac{mv^{2}}{R}\\\\\\1) \ \ dla \ v = \frac{2\pi R}{T}\\\\F_{d} = \frac{m(\frac{2\pi R}{T})^{2}}{R}=\frac{\frac{m\cdot4\pi^{2}R^{2}}{T^{2}}}{R} =\boxed{ \frac{4\pi^{2} mR}{T^{2}}}[/tex]
[tex]2) \ \ dla \ \ v = 2\pi Rf\\\\F_{d} = \frac{m\cdot(2\pi Rf)^{2}}{R} = \frac{m\cdot4\pi^{2}R^{2}f^{2}}{R} = \boxed{4\pi^{2}mf^{2}R}[/tex]
