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A block of density 8900kg/#m^3# measures 2cm by 5cm by 7cm is placed horizontally on a flat surface. Determine the difference between the maximum and minimum pressure.

Answer Text:
Volume = #2x5x7 =70cm^3#
Mass=8.9g/#cm^3times70cm^3# =623g
Weight = #623/1000times10= 6.23N#
Area (minimum)=#2times5=10cm^2#
Area (maximum)=#5times7=35cm^2#
P(max)= #6.23/10# = 0.623N/#cm^2# = 6230N/#m^2#
P(min)=6.23/35= 0.178N/#cm^2# =1780N/#m^2#
P(difference) = 4450 N/#m^2#