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DINAMIKAbidang datar kasar
μₖ = 0,2. μₛ = 0,3
m = 15 kg
g = 10 m/s²
F = 30 N, α = 37°
a = __?
Komponen gaya F
Fx = F cos α
Fx = 30 • 4/5 = 24 N
Fy = F sin α
Fy = 30 • 3/5 = 18 N
Gaya normal
N = mg - Fy
N = 150 - 18 = 132 N
Gaya gesekan statis maksimun
fs = μₛ N
fs = 0,3 • 132 = 39,6 N
Karena gaya penggerak Fx lebih kecil daripada gaya gesekan statis maksimum, benda belum bergerak.
Percepatan benda nol.