fatmasari26
A. B/K = Lk/Lb 300/K = 1/3 300.3 = K 900 N =K b. KM = B/K = 1/3 = 0,333
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liliput01
Diket: B = 300N lb = 1m lk = 3m Dit: a. Fk...? b. Km...? c. Jika lk = 1,2 m jawab: a. F = (B x lb)/lk Fk = (300 x 1)/3 Fk = 300/3 Fk = 100N diperlukan gaya kuasa sebesar 100N , b. Km = lk/lb Km = 3/1 Km = 3 Keuntungan mekaniknya 3kali
c. Jika lk menjadi 1,2 m maka lb = 4 - 1,2 = 2,8 maka F = (Bxlb)/lk Fk = (300x2,8)/1,2 Fk = 840/1,2 Fk = 700 N gaya kuasa menjadi lebih besar = 700N
300/K = 1/3
300.3 = K
900 N =K
b. KM = B/K = 1/3 = 0,333
B = 300N
lb = 1m
lk = 3m
Dit:
a. Fk...?
b. Km...?
c. Jika lk = 1,2 m
jawab:
a. F = (B x lb)/lk
Fk = (300 x 1)/3
Fk = 300/3
Fk = 100N
diperlukan gaya kuasa sebesar 100N
,
b. Km = lk/lb
Km = 3/1
Km = 3
Keuntungan mekaniknya 3kali
c. Jika lk menjadi 1,2 m maka lb = 4 - 1,2 = 2,8
maka F = (Bxlb)/lk
Fk = (300x2,8)/1,2
Fk = 840/1,2
Fk = 700 N
gaya kuasa menjadi lebih besar = 700N