PPT-Fluids Pressure Pressure is the force per unit of area

Pascals Newtonsm 2 Used to describe the influence on fluid behavior P ascal P rinciple Pressure is transmitted undiminished in an enclosed static fluid Ppgh P The difference in pressure. Calculating pressure. Calculating pressure is important to engineers.. For example, the foundations of a building have to carry the full downwards force of its weight.. There have been cases of buildings collapsing when the pressure on the foundations was too large.. The Relationship between Force and Area. Calculating Pressure . Remember that. force . is measured in Newtons (N) and . area. is often measured in square metres (m. 2. ).. The unit for pressure, therefore, is newtons per square metre (N/m2). This unit is also called a . Fluids are a collection of randomly arranged molecules held together by . weak . cohesive forces. This is unlike crystals (solids) which arrange orderly on a lattice). Pressure, Pascal’s law. Buoyant forces and Archimedes Principle. Pressure.. A measure of how much force is acting on a certain area. How concentrated the force is. Pressure is force divided by area.. Pascal.. The unit used to measure pressure. One . pascal. is the pressure exerted by one newton of force on an area of one square meter.. Atmospheric pressure. Pressure. Why do predators often have . SHARP . teeth and claws?. Why does wearing skis stop . you from . SINKING. into the snow? . IGCSE Pressure . Relate pressure to force and area, using appropriate examples . Chapter 12. BIG IDEAS. Newton’s laws apply to all forces. Gravity is a force exerted by all masses. Friction is a force that opposes motion. Pressure depends on force and area. Fluids exert a force on objects. Ms. Deanne. Buoyancy and Pressure. Particle Model. All matter is made of tiny particles. The particles are always moving. Some particles are attracted or bonded to other particles. All particles have space between them. Pages 66 – 84 in textbook.. A substance that has the capacity to flow and assume the form of the container into which it has been poured.. What is a fluid?. Water, milk, blood and saliva. Gases are also considered fluids: air, helium and ozone.. What is pressure?. Pressure is the force per unit area that is applied on the surface of an object.. Chapter 12: Forces and Fluids. Calculating pressure. Pressure increases if the force applied increases and decreases if the area of contact increases.. Pressure. Density. Archimedes’ Principle. Ideal gas law. Pascal’s Principle. Bernoulli’s Principle. Fluids are materials that can flow: gases and liquids.. Air is the most common gas, and moves from place to place as wind. . Being trodden on by a 55kg woman wearing stiletto heels?. What would be more painful?. Being trodden on by a 55kg woman wearing stiletto heels?. Or being trodden on by a 3 tonne elephant?. What would be more painful?. Hydraulic Machines WALT- Explain how water pressure may help us WILF – Notes taken, questions answered 1. What do we mean when we say that a machine is “hydraulic”? ________________________________________________________________ Experiment associated with Blaise Pascal. A long thin tube placed into a barrel. Water . is poured in the top that increases the . Hydrostatic Pressure based on elevation. and causes the barrel to burst. . gases. sand, snow, or grain (granular materials). FLUIDS .  . STUFF THAT FLOWS. FLUIDS. 1. States of Matter. Comes in three states – solid, liquid, gas. So far we have only dealt with . solid.