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m = 5 Kg
F= 25 N
α = 37°
g = 10m/s
μk = 0,1
N = __
fk = __?
a = __?
gaya berat benda
w = m g
w = 5 • 10 = 50 N
komponen gaya F
Fx = F cos α = 25 • 0,8 = 20 N
Fy = F sin α = 25 • 0,6 = 15 N
gaya normal
ΣFy = 0
N + Fy - w = 0
N = 50 - 15 = 35 N ← jwb
gaya gesekan
fk = μk N
fk = 0,1 • 35 = 3,5 N ← jwb
percepatan
ΣFx = m a
Fx - fk = m a
20 - 3,5 = 5 a
a = 3,3 m/s² ← jwb