Hydrostatics Review

p (roe) is the symbol for

The density of water is kg/m sq

• 1

• 10

• 100

• 1000

Water pressure at the bottom of a lake depends on the ___.

• weight of water in the lake.

• surface area of the lake.

• depth of the lake.

• density of the water.

Consider a U-shaped tube filled with water with pistons at each end. When pressure is increased at one end of the tube, pressure at the other side will ___.

• increase by the same amount.

• increase more if the piston at the output end has a greater area.

• decrease if the piston at the output end has a smaller area.

• decrease in accord with the conservation of energy, regardless of piston area.

The buoyant force that acts on an object submerged in water is due to ___.

• equal water pressures on all sides.

• greater water pressure on the bottom than on the top.

• the greater volume of the submerged object compared with the volume of an equal weight of water.

• whether or not the object is denser than water.

If an object sinks in a fluid, _____.

• the density of the fluid is greater than the density of the object
• the density of the fluid is less than the density of the object
• the density of the fluid is equal to the density of the object
• density has nothing to do with whether an object sinks or floats, only which state of matter the object is

What is the SI unit use for hydraulic pressure?

• Kg/m³

• Pa

• kg m^-3

• N m²

The upward force exerted by a fluid is called the...

• buoyancy force

• density force

• fluidity force

• normal force

When pressure is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid. This fact is called________.

• Pascal's Principle
• Newton's Principle
• Archimedes' Principle
• Bernoulli's Principle

When area increases...

• pressure increases

• pressure decreases

• pressure stays the same

• pressure increases then decreases