The side length of a square block is 10 cm. Put it on a horizontal table and calculate its pressure on the table (it is known that the density of wood block is 0.6 * 10 cubic n / kg; g = 10N / kg)

Answer: 600Pa
Analysis:
Method 1
Directly use p = ρ GH, H = 10cm = 0.1M
P＝60×10×0.1＝600pa
Method 2
Calculate the block mass:
m＝ρv,v＝10×10×10＝1000cm3,ρ＝0.6g/cm3
＝0.6×1000＝600g＝0.6kg
Gravity: g = mg = 0.6 × 10 = 6N
Area: S = 10 × 10 = 100cm2 = 0.01m2
P=F/s=G/s=6/0.01=600pa

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