Question

How did the hydraulic jack help Neil do his job? A. It decreased the force of gravity on the pallet. B. It increased the force he could use to lift the pallet. C. It decreased the distance over which he had to move the pallet. D. In increased the force he could use to push the pallet. Reset Submit

Answer 1

The answer is B. His force was multiplied several folds by the hydraulic jack so he was able to lift the pallet, with less effort. Hydraulic lifts work on the principle of P = FA and that P1 = P2. If the area of the lifting cylinder is greater than that of the cylinder on which the effort is applied, the potential output at the bigger lifting cylinder is greater compared to that applied.