plis no 7 dan 8 dengan caranya

Saya bantu jawab ya.

FISIKA
Pesawat Sederhana

7)
W = 600 N
Perbandingan Lw : Lf = 1 : 3
Panjang asli (Lw : Lf) = 1x : 3x
Panjang tuas = 4 m

1x + 3x = 4
4x = 4
x = 4/4
x = 1

Lw = 1.1 = 1 m
Lf = 3.1 = 3 m

W × Lw = F × Lf
600 × 1 = F × 3
600 = F × 3
F = 600 ÷ 3
F = 200 N

8)
KM = Lf ÷ Lw
Lf = l. Tt -> Tf = 2 + 6 = 8 m
Lw = l. Tt -> Tw = 2 m

KM = 8 ÷ 2
KM = 4

Semoga bisa membantu! :DD