Pascal’s Principle Contents: How to calculate Whiteboards.

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Presentation transcript:

Pascal’s Principle Contents: How to calculate Whiteboards

A confined fluid transmits external pressure: Demo - hydraulic jack

Example – A hydraulic jack has an input piston with a diameter of 8.20 mm, and an output piston diameter of 95.0 mm. What force in Newtons do you need to apply to lift a ton? (8900 N) What is the pressure in Pa? How far must you move the input cylinder to raise the car 10.0 cm? (66.3 N, 1.25E6 Pa, 1340 cm)

Pascal’s Principle 11 | 2 | 323

465 N A car has a master cylinder bore size of 2.50 cm, and a caliper bore of 4.40 cm. What force does the caliper exert if you press on the master cylinder with a force of 150 N? (150 N)/(  (.044/2) 2 ) = F/(  (.025/2) 2 ) F = 150(4.4 2 /2.5 2 ) = N

m or 0.42 cm A hydraulic jack has an output cylinder with a 5.2 cm bore, and needs to lift a 53,400 N weight with an input force of 356 N. What is the diameter of the input cylinder needed? (53,400)/(  (.052/2) 2 ) = (356)/(  (D/2) 2 )