A cube of edge 2 cm and mass 10 g is placed on the surface of a table.
What is the pressure exerted by the cube on the table?
-
0.098 N/m2
-
0.196 N/m2
-
122.5 N/m2
-
245 N/m2
pressure=force/area
force=weight of the cube=mg=(0.010kg)×(9.8m/s2)=0.098kgm/s2=0.098N
area=area of base=(0.02m)×(0.02m)=.0004m2
pressure=force/area=0.098N/.0004m2=245N/m2