Name: _____________________________ Block: ______ Date: __________________
Pressure/Density WORKSHEET
TO CALCULATE THE PRESSURE (P), USE THE EQUATION
TO CALCULATE THE DENSITY (D), USE THE EQUATION
P=F/A
D=m/V
1. Calculate the pressure on a man’s foot when a woman who weighs 130 lb steps
on his foot with her heel which has an area of 0.5 in2 with all her weight.
2. Calculate the pressure exerted on the floor when an elephant who weighs 6000
lb stands on one foot which has an area of 20 in2.
3. Calculate the mass of a liquid with a density of 3.2 g/mL and a volume of 25 mL.
4. An irregular object with a mass of 18 kg displaces 2.5 L of water when placed in a
large overflow container. Calculate the density of the object.
5. A graduated cylinder has a mass of 80 g when empty. When 20 mL of water is
added, the graduated cylinder has a mass of 100 g. If a stone is added to the
graduated cylinder, the water level rises to 45 mL and the total mass is now
156 g. What is the density of the stone?
6. Calculate the pressure exerted on the heel of a boy’s foot if the boy weighs 80 N
and he lands on one heel, which has an area of 16 cm2.
LPPACS – Schmidt
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7. A rectangular block of lead (Pb) measures 20.0 mm X 30.0 mm X 45.0 mm. If the
density of Pb is 11.34 g/cm3, calculate the mass of the block.
8. A cube of gold (Au) has a side length of 1.55 cm. If the sample is found to have a
mass of 71.9 g, find the density of Au.
9. An irregularly-shaped sample of aluminum (Al) is put on a balance and found to
have a mass of 43.6 g. The student decides to use the water-displacement
method to find the volume. The initial volume reading is 25.5 mL and, after
the Al sample is added, the water level has risen to 41.7 mL. Find the density
of the Al sample in g/cm3. (Remember: 1 mL = 1 cm3.)
10. How much must a woman weigh (force) if the pressure she exerts while standing
on one foot which has an area of 30 in2 exerts a pressure of 4 lb/ in2?.
11. What is the area of a car tire that touches the road if the car’s weight on that tire
is 700 N and the pressure exerted on the road is 12 lb/In2?
12. Calculate the pressure exerted on an elevator floor, which is 2 meters deep and
3 meters wide, if 20 people whose combined weight is 1500N are on it.
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13. How much pressure is exerted on a science lab desk, which measures 24 inches
deep, and 30 inches long by the air column above it pushing down with a
weight of 1,000 N.
14. A 2.75 kg sample of a substance occupies a volume of 250.0 cm3. Find its density
in g/cm3.
15. Under certain conditions, oxygen gas (O2) has a density of 0.00134 g/mL. Find
the volume occupied by 250.0 g of O2 under the same conditions.
16. Find the volume that 35.2 g of carbon tetrachloride (CCl4) will occupy if it has a
density of 1.60 g/mL.
17. The density of ethanol is 0.789 g/mL. Find the mass of a sample of ethanol that
has a volume of 150.0 mL.
18. How much pressure will be exerted on a diver’s body, which has an area of 500
in2, if the water column above him weighs 3,678 N?
LPPACS – Schmidt
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