Chapter 7 Pressure

Description

Slides for pressure.
Slide Set by Hui Yuan, updated more than 1 year ago
 Created by Hui Yuan over 8 years ago
268
2

Resource summary

Slide 1

Pressure
Caption: : Oh My God What Is This?!

Slide 2

What is Pressure?
Pressure is DEFINED as the FORCE ACTING per UNIT AREA.SI unit of pressure: Newton per sq metre/pascal
Caption: : p= pressure in (Pa), F= force in (N), A= area in metre sq.

Slide 3

Pressure in liquids
The amount of pressure inside a body of liquid increases with depth.At greater depths,the weight of liquid is greater.Hence,the pressure is greater.Liquid pressure formula:p= height(m) x Density of liquid x gravitational field strength

Slide 4

What affects the pressure in liquids?
Pressure in liquid depends only on the vertical height of the liquid column and the,not the volume & the cross-sectional area/shape of the column.Hence,at equilibrium,the liquid level in all the columns is at the same height.

Slide 5

Transmission of pressure in liquids
Caption: : Hydraulic Machine
We learned hydraulic action in Geography and we're gonna learn about hydraulic machines in Physics..Hydraulic machines enable heavy objects like cars to be lifted with a small amount of effort.They use liquids to transmit pressure.Pressure is applied to an enclosed liquid,the pressure is transmitted equally to all other parts of the liquid.(Pascal's Principle)

Slide 6

Hydraulic Press

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