a cubical block of side 2cm is lying on a table.if the density of the material of the cube is 10,000 kg per metre cube find the pressure exerted by the block on the table.(g=10 metre per second square)
For cubical block given that
l = 2 cm = 0.02 m
Volume, V = t3 = (0.02)3 = 8 × 10– 6 m3
Area of each face A = l2 = (0.02)2
= 4 × 10– 4 m2
Density of block ρ = 10000 kg/m3
Mass of the block = ρV
= 10000 × 8 × 10– 6 kg
g = 9.8 m/s2
