1.
[tex]dane:\\v_{max} = 4\frac{m}{s}\\a_{max} = 62,8\frac{m}{s^{2}}\\szukane:\\T = ?\\\\\\v = a\cdot t \ \ /:a\\\\t = \frac{v}{a} = \frac{4\frac{m}{s}}{62,8\frac{m}{s^{2}}}= 0,06 \ s[/tex]
Okres drgań:
T = 0,06 s - dla maksymalnej prędkości.
2.
[tex]dane:\\m = 90 \ kg\\a = 2\frac{m}{s^{2}} \ - opoznienie\\g = 9,81\frac{m}{s^{2}}\\szukane:\\F_{n} = ?\\\\\\F_{n} = mg + ma\\\\F_{n} = m(g+a)\\\\F_{n} = 90 \ kg\cdot(9,81\frac{m}{s^{2}}+2\frac{m}{s^{2}})\\\\F_{n} = 90 \ kg\cdot11,81\frac{m}{s^{2}}\\\\F_{n} = 1 \ 062,9 \ N[/tex]
