A1=20cm A2=60cm F2=9.000N DIT=F1. ? JAWAB=

[tex] \frac{f1}{a1} = \frac{f2}{a2} [/tex]

[tex] \frac{f1}{20} = \frac{9000}{60} [/tex]

[tex] \frac{f1}{20} \times \frac{60}{9000} [/tex]

[tex]60f1 = 180000[/tex]

[tex]f1 = 3000 \: newton[/tex]

*Ini bukannya Fisika ya?