Question

Diket : Kubus dgn Rusuk 4 cm
W = 1,92 N
g = 10 N/Kg
Dit : Massa Jenis ?

Option :
a. 2000 Kg/m3
b. 3000 Kg/m3
c. 20.000 Kg/m3
d. 30.000 Kg/m3

Answer 1

Verified answer

W= m x g
1,92 = m x 10
m = 1,92/10
=0,192 kg

v= r pangkat 3
=0,04x0,04x0,04
=0,000064 m3

massa jenis = m/v
0,192/0.000064 =3000 m3 (b)

Answer 2

Volume = 4 cm x 4 cm x 4 cm
volume = 64 cm³
w = 1,92 N
g = 10 N/kg = 10 m/s²
ρ = ... ?
Penyelesaian:
1) Cari massanya terlebih dahulu,
w = g m
1,92 = 10m
m = 1,92/10
m = 0,192
2) Konversikan volume cm³ ke m³,
64 cm³ = 64/1.000.000 m³
64 cm³ = 0,000064 m³
3) Hitung massa jenisnya,
ρ = m/V
ρ = 0,192/0,000064
ρ = 3.000 kg/m³