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F s = W h
F = W h / s
F = m g h / s
F = 25 10 3 / 5
F = 150 Newton
s(sisi miring) = 5m didapat dari cara phytagoras
h = 3 m
dengan menggunaka perkalian silang maka :
F.s = W.h
F =
F = mgh/s
F = 25.10.3/5
F = 150 N