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Physics Assignment
Physics Assignment

   
EMC Student
   
[Type the fax number]
2/24/2012
   
EMC Student
   
[Type the fax number]
2/24/2012

Hydraulic rescue equipment
Venturi Effect
Blood volume increase
Submerged objects

Hydraulic rescue equipment
Venturi Effect
Blood volume increase
Submerged objects

FLUIDS
Part A – Hydraulic rescue equipment

Question a
Pascal’s principle - states that when there is an increase in pressure at any point in a
confined fluid, there will be an equal increase in pressure at every other                       point in the container.
Meaning that pressure acts in all the directions.

Question b
  * To understand Pascal’s principle imagine an enclosed fluid as in figure below
  * The figure has two pistons which moves within.
  * One of the pistons has a small cross sectional area,
  * The other one has a large cross sectional area.
  * The force pushes the small piston into the hydraulic fluid,
  * This results that a pressure is transferred unto the larger piston.
  * The pressure is the same, as per Pascal’s principle, on the small and large piston.
  * Total FORCE = P X A
  * The total force on the larger piston will be greater than the total force on the smaller piston.
  * The larger piston multiplies force exerted on the smaller piston.  

                                               
   

A1 = P1     &     A2 = P2
  * P1 = P2 (P =     F   )
          A

  *     F1       =       F2 OR F1       =       F2
  A1               A2 A1               A2
  * Thus F2       =       F1     x     A2
  1             A1
  * Thus F2   =   2   x   F1
  * If A2   >   A1     then     F2 >   F1
  * Due to the area at A2 being larger, and as Pascal’s law just explained, the force at A2 must be bigger, thus allowing the cutters to have such a great strength.


Part B – Venturi Effect
Question a
  * Bernoulli’s Principle applies to the working...

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