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Verified answer
F = 30 Nm = 50 kg
g = 10 m/s²
Gaya normal yang dialami benda
N = m.g
N = 50(10)
N = 500 Newton
Kecepatan konstan, artinya percepatan benda adalah a = 0
Jadi,
F - f = m.a
F - f = 50(0)
F - f = 0
F = f
F = μ.N
30 = μ (500)
μ = 30/500 = 0,06
μ adalah koefisien gesekan