A brick of gold is 0.1 m wide, 0.1 m high, and 0.2 m long. The density of gold is 19,300 kg/m3. What pressure does the brick exert on the table if the brick is resting on its side?

Explanation:

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In this case, since we can compute the volume of the brick as shown below:

Next, we can compute the mass of the brick given its density:

Now, since the force exerted on the table corresponds to the weight of the brick, we use the gravity to obtain:

Finally, since the surface of the brick in contact with the table corresponds to the 0.1x0.2 area (length and width), the area on which the weight force is exerted is:

Therefore, the pressure is:

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