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A barber’s chair with a person in its weighs 2100 N. the output plunger of a...

A barber’s chair with a person in its weighs 2100 N. the output plunger of a hydraulic system begins to lift the chair when the barber’s foot applies a force of 55 N to the input piston. Neglect any height difference between the plunger and the piston. What is the radio of the radius of the plunger to the radius of the piston?
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Answer #1

Concept - pressure at both the plunger and the piston will be equal. Hence the ratio of force to area will be same for both the plunger and the piston. Use this equation to find the ratio of the radii required as shown below.

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