Pressure and Pascal's Principle

In a hydraulic press, if the output piston has an area 5 times larger than the input piston, what is the force multiplication factor?

• 5

• 10

• 1

• 0.2

Where would you find the largest pressure?

• At the bottom of the ocean

• At the top of Mt Everest

• Close to ground on the Scotch oval

• In a rockpool on the Great Barrier Reef

Air pressure is greatest when near Earth's surface because?

• The air molecules are farther apart.

• The air molecules are closer together.

• Air molecules collide.

• Air molecules are tightly packed.

When a diver dives deeper into the ocean, he will experience ...................... liquid pressure

• greater

• less

• no

In what direction(s) does air exert pressure?

• everywhere

• no where

• there is no pressure

• downward

Air pressure does not crush objects on earth

• because more air pushes down than up

• because gravity keeps air pressure away

• because air pressure pushes in all directions

• because the Earth has an opposing force of gravity

The rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally throughout.

• pascal's principle

• bernoulli's principle

• archimedes' principle

• Newton's Law

If a hydraulic system has 1000 N applied to the input piston and has an area of 81 cm², what is the pressure?

• 12.35 Pa

• 12,346 Pa

• 1235 Pa

• 123,457 Pa

Which of the following best suit the statement below?

Pressure applied to an enclosed fluid is transmitted undiminished to every point in the fluid and to the walls of the container.

• Bernoulli’s principle

• Pascal’s principle

• Archimedes principle

• Newton’s law

In a car lift, compressed air exerts a force, F₁ on a small piston having a radius of 5.5cm. This pressure is transmitted to a second piston of radius 20cm as shown in figure above. The mass of the car is 1250kg. Acceleration due to gravity g=10ms^-1.

Calculate the pressure on the smaller piston F_1.

(Pressure exerted by fluid on large and small piston is same- Pascal's Law)

• 100kPa

• 130kPa

• 99.5kPa

• 151.2kPa

Tags

NGSS.MS-PS2-4