Question

Nomor 6 dan 7, tentang usaha dan gaya, udah ada jawabannya kok, tinggal caranya... makasih..

Answer 1

6. s = 2,5 m
F = 40 N
f = 10 N
W = ?

W = (F-f) x s
    = (40-10) x 2,5
    = 75 J

7. lk =60 cm
lb = 30 cm
F = 40 N
g = 10 m/s²
m = ?

lk/lb = w/f
60/30 = w/40
2 = w/40
w = 80 N

w = m x g
80 = m x 10
m = 80/10
    = 8 kg