Multiple Choice
A large warehouse is 100 m wide, 100 m deep, 10 m high:
a) What is the total weight of the air inside the warehouse?
b) How much pressure does the weight of the air apply on the floor?
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Intro to Pressure
Multiple Choice
A wooden cube, 1 m on all sides and having density 800 kg/m3 , is held under water in a large container by a string, as shown below. The top of the cube is exactly 2 m below the water line. Calculate the difference between the force applied by water to the top and to the bottom faces of the cube (Hint: calculate the two forces, then subtract. Use g=10 m/s2.)
A
Fbot − Ftop = 800 N
B
Fbot − Ftop = 1000 N
C
Fbot − Ftop = 8,000 N
D
Fbot − Ftop = 10,000 N
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