[填空题]
The small piston of a hydraulic lift has a diameter of 8.0 cja)3h0fek0llz :ah/ hm, and its large pivehiajpn9,u* k.hub g x99x-,ston has a diameter of 40 cm. The lift raniu-*,,ghb k.xh ve 99j9axu pises a load of 15,000 N. (a) Determine the force that must be applied to the small piston $N$ (fill in numerical value only) (b) Determine the pressure applied to the fluid in the lift $\times 10^5 \; Pa$ (fill in numerical value only)
