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Science - Unit 4 - Topic 4
Force, Pressure, and Area
8
Science
8th Grade
05/21/2018

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Term
pressure equation
Definition
Pressure = force divided by area
Term
what is force measured in
Definition
newtons
Term
What does Pascal’s law state
Definition
pressure exerted on a contained fluid is transmitted in all directions throughout the fluid
Term
Why should you not use water in a hydrolic system
Definition
Water is not a good lubricant and it can cause the machine to rust, freeze, evaporate.
Term
1. You exert a force of 500 N on the small piston in a hydraulic lift. The small piston has an area of 100 cm2
2. The area of the large piston is 2500cm2, how many newtons of force will the large piston exert?
Definition
5 pascals FORCE / AREA = PRESSURE
2500 / 100 = 25
25 x 500 = 12500 LARGE AREA / SMALL AREA 25x LARGER MULTIPLY BY FORCE
Term
what is the unit for pressure
Definition
pascals
Term
Calculate the MA of the following hydraulic lift. You exert a force of 500 N and you cause the large piston to exert a force of 5000 N on the load. What is the MA of the hydraulic lift?
Definition
5000 / 500 = 10 FORCE ADVANTAGE
Term
What combination of units is the same as the pascal?
Definition
newtons per square metres
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