Question

Tolong bantu saya nengerjakan soal no 17 dan 18

Answer 1

Soal 17
Dik:
lb= 1/2 m
lk=2-1/2=1,5
F=1000
Dit; W ?
Jawab:
KM=lk/lb=w/f
       1,5/ 1/2= w/1000
        3= w/1000
      3000= w
Soal 18
dik=
W=400 N
lb =2
lk =8
dit= F
Jawab
KM=lk/lb=w/f
       8/2=400/f
      4= 400/f
      F=100N

Answer 2

17. pnjang tuas = 2m, 
     pnjang Lk= 1,5m   pnjang Lb=0,5
       1000 x 1,5 = W x 0,5
        W = 1500 / 0,5 = 3000N     Jawaban : A

18. Lb=2m    Lk=8m
      W=400N
      F x 8 = 400 x 2
      F = 800 / 8 = 100N               Jawaban : D