In a hydraulic jack

PHYSICS · Subjective · CBSE · Physics · Mechanical Properties of Fluids · Mechanical Properties of Fluids

Problem

In a hydraulic jack, the small piston (area

6\,\text{cm}^2

) is

0.25\,\text{m}

lower than the large piston (area

120\,\text{cm}^2

). The space between pistons is filled with oil of density

800\,\text{kg m}^{-3}

. Determine the minimum force that must be applied on the small piston to raise an

8\,000\,\text{N}

car resting on the large piston.