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F = w × lb / lk
= 1200 × 20 / 200
= 120 N
W = 1.200 N
Lb = 50 cm = 0,5 m
Lk = 200 cm = 2 m
Ditanyakan : Jika titik tumpu digeser 30 cm ke beban, berapa besar F digeser ?
Dijawab :
W x Lb = F x Lk
1.200 x 0,5 = F x 2
600 = F x 2
F = 600/2
F = 300 N
Jadi jika Lb = 50-30 =20 cm = 0,2 m
W x Lb = F x Lk
1.200 x 0,2 = 300 x Lk
240 = 300 x Lk
Lk = 300/240
Lk = 1,25 m
Jadi digeser sebesar = 2 - 1,25 = 0,75 m = 75 cm ke arah titik tumpu
jawaban