PHYSICS · Multi-part · CBSE · Physics · Mechanical Properties of Fluids · Mechanical Properties of Fluids
Problem
A hydraulic press uses oil of density 880kgm−3. The small piston has a cross-sectional area of 6cm2, while the large piston has an area of 0.30m2. The large piston is situated 0.75m vertically above the small piston. A crate of mass 1200kg is placed on the large piston and is to be kept just in equilibrium (neither moving up nor down).
Answer the following questions with clear working.
(i) Calculate the pressure difference between the levels of the two pistons produced solely by the vertical separation.
(ii) Determine the minimum force that must be applied on the small piston to hold the crate in equilibrium.
(iii) Compute the mechanical advantage offered by the press under these conditions.