Hello!
By definition, a pressure is the force acting perpendicular to the surface divided by the area on which this force is distributed.
In our case, the force is the weight of a brick and it is given (16 N). The area on which the weight is distributed is equal to the length (32 cm) multiplied by the width (10 cm), so it is equal to 320 `cm^2.` So the pressure is
16/320 = 0.05 (`N/(cm^2)`).
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Hello!
By definition, a pressure is the force acting perpendicular to the surface divided by the area on which this force is distributed.
In our case, the force is the weight of a brick and it is given (16 N). The area on which the weight is distributed is equal to the length (32 cm) multiplied by the width (10 cm), so it is equal to 320 `cm^2.` So the pressure is
16/320 = 0.05 (`N/(cm^2)`).
Probably it is better to express the pressure in canonical units, Pa, which are Newton by square meter, `N/m^2.` To do this we have to express the area in square meters, and it is 0.32 m * 0.1 m = 0.032 `m^2.` So the pressure may be also expressed as
16/0.032 = 500 (Pa). This is the answer. Note that for a fixed weight it doesn't depend on a thickness of a brick.
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