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m = 500g
50cmx10cmx20cm
g = 10 m/s
dit: P?
jawab=
F = mg = 500.10 = 5000 N
A = p.l.t = 50.10.20 = 10000 m^2
P = F/A = 10000/5000 = 2
maaf kalau salah
arigatou gozaimasu
m = 500 gram = 0,5 kg
Ukuran = 50 x 10 x 20 cm = 0,5 x 0,1 x 0,2 = 5x10⁻¹ m x 2x10⁻¹ x 2x10⁻¹ m
g = 10 m/s²
Ditanyakan : P ?
Dijawab :
A = 2 x (0,5x0,1 + 0,5x0,2 + 0,1x0,2)
= 2 x (0,05 + 0,1 x 0,02)
= 2 x 0,00025
= 0,0005
= 5x10⁴ m²
Jadi tegangan :
P = F/A
= (mxg)/A
= (0,5x10)/5x10⁴
= 5/5x10⁴
= 10⁻⁴ Nm²