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Rumus hubungan bidang miring.
W / F = s / h
Kita cari dulu W
W = m . g
W = 50 . 10
W = 500 N
Masukan dalam rumus
W / F = s / h
500 / F = 4 / 2
Kali silang
F = 500 ÷ 2
F = 250 N
Opsi C