A hydraulic lift uses incompressible oil to raise a car

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids

Problem

A hydraulic lift uses incompressible oil to raise a car. A downward force of 120 N120\,\text{N} is applied to a circular input piston of radius 1.5 cm1.5\,\text{cm}. The output piston that supports the car has a radius of 9.0 cm9.0\,\text{cm}. Neglect any height difference between the pistons. Which of the following is closest to the maximum weight of the car that can be supported by the lift? (a) 7.2×102 N7.2 \times 10^{2}\,\text{N} (b) 3.0×103 N3.0 \times 10^{3}\,\text{N} (c) 4.3×103 N4.3 \times 10^{3}\,\text{N} (d) 2.9×104 N2.9 \times 10^{4}\,\text{N}

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