October 2018 2 19 Report
Sebuah mesin pengangkat mibil mempunyai luas penampang kecil dan besar seluas 8cm^ dan 20 cm^.jika gaya tekanan penampang kecil 20 N maka gaya angkat di penampang besar adlah
a.8N
b.20N
c.40N
d.50N
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