Chap 3 force & pressure

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FORCE FORCE

Transcript of Chap 3 force & pressure

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FORCEFORCE

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conclusion

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conclusion

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PASCAL PASCAL PRINCIPLEPRINCIPLE

PASCAL PASCAL PRINCIPLEPRINCIPLE

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AN ENCLOSED FLUID AN EXTERNALLY APPLIED PRESSURE

IS TRANSMITTED UNIFORMLY IN ALL DIRECTION

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345

6

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USE TO LIFT HEAVY LOAD

HYDRAULIC JACKS

O

P

R

E

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O = HANDLE

P = IS PRESSED DOWN

E1 = VALVE A CLOSE

E2 = SMALL PISTON FORCES HYDRAULIC FLUID THROUGH VALVE B

R = PRESSURE TRANSMITTED IN A LARGE FORCE ON LOAD

O = HANDLEP = IS RAISED

E1 = VALVE B CLOSE

E2 =FLUID FLOWS FROM THE BUFFER TANK THROUGH VALVE A INTO SMALL CYLINDER

R = LIFTED UP THE LOAD

HYDRAULIC JACKS

USE TO LIFT HEAVY LOAD

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O BRAKE PEDAL

P IS PRESSED

E1

E2

THE PISTONAPPLIES APRESSURE

ON THE BRAKE FLUID

THIS PRESSURE IS TRANSMITTED TOEACH CYLINDER AT THE WHEELS

RCAUSE A PAIR OF FRICTION PADS TO PRESS

AGAINST SURFACE BRAKE DISCS

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HYDRAULIC PUMP

O

P

E

USE TO LIFT CAR/LORRYIN MOTOR

WORKSHOP

SMALL CYLINDER

IS COMPRESSED

PRESSURE IS TRANSMITTED BY OIL TO THE LARGE CYLINDER

R LIFT THE CAR

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SOLUTION

EXAMPLE

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SOLUTION

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ARCHIMEDES’ARCHIMEDES’PRINCIPLEPRINCIPLE

ARCHIMEDES’ARCHIMEDES’PRINCIPLEPRINCIPLE

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BERNOULLI’SBERNOULLI’SPRINCIPLEPRINCIPLE

BERNOULLI’SBERNOULLI’SPRINCIPLEPRINCIPLE

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