[tex]dane:\\F = 4 \ kN = 4 \ 000 \ N\\W = 800 \ J\\szukane:\\s = ?\\\\W = F\cdot s \ \ /:F\\\\s = \frac{W}{F}\\\\s = \frac{800 \ J}{4000 \ N} =\frac{800 \ kg\cdot\frac{m^{2}}{s^{2}}}{4000 \ kg\cdot\frac{m}{s^{2}}} = 0,2 \ m[/tex]
Wzór na pracę :
W = F · s
Dane :
F = 4 kN = 4 · 1000 N = 4000 N
W = 800 J
Szukane :
s = ?
Obliczenia :
4000 N · s = 800 J
s = 800 J : 4000 N
s = 0,2 m
