3. In an hydraulic lift, the diameters of the pistons are \( 5.00 \mathrm{~cm} \) and \( 20.0 \mathrm{~cm} \). A car weighing \( 10.0 \mathrm{kN} \) is to be lifted by the force of the large piston. a) What force must be applied to the small piston? b) When the small piston is pushed by \( 10.0 \mathrm{~cm} \), how far is the car lifted?
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In a hydraulic lift, the radii of the pistons are $2.50 \mathrm{cm}$ and $10.0 \mathrm{cm} .$ A car weighing $W=10.0 \mathrm{kN}$ is to be lifted by the force of the large piston. (a) What force $F_{\mathrm{a}}$ must be applied to the small piston? (b) When the small piston is pushed in by $10.0 \mathrm{cm},$ how far is the car lifted?(c) Find the mechanical advantage of the lift, which is the ratio $W / F_{\mathrm{a}}$.
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