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Pascal’s Principle

35. Pascal’s Principle. Conceptual Physics Text Correlation: Section 19.6. Suppose you exerted your input force on the larger piston in Figure 19.19. How much force would you have to exert to lift a 2-unit block?. Answer: Fifty times as much, 100 units. Question 1.

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Pascal’s Principle

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  1. 35 Pascal’s Principle Conceptual Physics Text Correlation: Section 19.6

  2. Suppose you exerted your input force on the larger piston in Figure 19.19. How much force would you have to exert to lift a 2-unit block? Answer: Fifty times as much, 100 units. Question 1

  3. If one unit of force lifts 50 units, isn't energy conservation being violated? Answer: No. The I unit of force moves the 50 units only 1/50th the distance the 1-unit moves. Question 2

  4. Suppose the liquid were removed from the reservoir altogether. Would the lift still work under air pressure? Answer: Yes, just as air pressure in tires helps to support the weight of the car. Hydraulic liquid maintains a constant volume, so the air compressor need compress less air to lift the car. Question 3

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