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W = 100 kkal
W = 100.000 x 4,2 = 420.000 J
s = 10 m
Ditanya: w....?
jawab:
w = F
W = F . s
F = W/s
F = 420000/10
F = 42.000 N
jd besar beban yg dpt diangkat = 42.000 N