Question

A hydraulics system is set up to lift an elephant. The elephant has a mass of 5900 kg and is placed on a piston with a cross sectional area of 2.1 m 2 . With how much force must someone push on a connected piston with a cross-sectional area of 0.012 m 2in order to lift the elephant?

Answer 1

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LEARNING OBJECTIVES

By the end of this section, you will be able to:

State Pascal’s principle

Describe applications of Pascal’s principle

Derive relationships between forces in a hydraulic system

Pascal’s principle (also known as Pascal’s law) states that when a change in pressure is applied to an enclosed fluid, it is transmitted undiminished to all portions of the fluid and to the walls of its container. In an enclosed fluid, since atoms of the fluid are free to move about, they transmit pressure to all parts of the fluid and to the walls of the container. Any change in pressure is transmitted undiminished.

Answer 2

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