physics
posted by jim .
the mass of a brick is 2.5 kg. its dimensions are 10cmx5cmx2cm. find the pressure of the brick exerts on the ground if it is resting on a. 10cmx5cm base and b. 5cmx2cm base

Pressure = force / area
Force = mg = 2.5*9.81 N
a. Area = 10cm * 5 cm =0.10*0.05 m²
=0.005 m²
Pressure = 2.5*9.81/0.005=4905 Pa
Part b can be solved similarly.
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