06 pressure Flashcards

1
Q

Definition

Pressure

A

Force per unit area.

Unit:
* Newton per square metre, N/m2
* Pascal, Pa

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2
Q

Formula

Pressure

Solids

A

P = F/A

F = force
A = area

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3
Q

Formula

Pressure

Liquids

A

P = hρg

h = height
ρ = density
g = gravitational field strength

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4
Q

Atmospheric Pressure

A

1.013 x 105 Pa

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5
Q

Hydraulic System

Pascals’ Principal

A
  • Liquids are incompressible
  • If pressure is applied in an enclosed system, it is transmitted to all parts of the liquid
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6
Q

Formula

Hydraulic Systems

A

F1/ A1= F2/ A2

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