1.
[tex]p = \frac{F}{S} \ \ /\cdot S\\\\p\cdot S = F \ \ /:p\\\\\underline{S = \frac{F}{p}}[/tex]
2.
[tex]E_{p} = \frac{kx^{2}}{2} \ \ /\cdot2\\\\kx^{2} = 2E_{p} \ \ /:k\\\\x^{2} = \frac{2E_{p}}{k}\\\\\underline{x = \sqrt{\frac{2E_{p}}{k}}}[/tex]
3.
[tex]F_{d} = \frac{mv^{2}}{r} \ \ /\cdot r\\\\r\cdot F_{d} = mv^{2} \ \ /:F_{d}\\\\\underline{r = \frac{mv^{2}}{F_{d}}}[/tex]
Odpowiedź:
Wyjaśnienie:
P = F/S /*S S≠0
PS=F/:P
S=F/P
Ep5 = 1/2 • k • x² /*2
10Ep=kx^2/:k
10Ep/k=x^2
x=√(10Ep/k)
F d = m • v²/r /*r r≠0
Fdr=mV^2/:Fd
r=mV^2/Fd
