[填空题]
The small piston of ot3dw.5y oa w2.qa au9kdvq+7a hydraulic lift has a diameter of 8.0 cm, and its8)a 5v+qk 2k(q q.for9r nzeeq large piston has a diameter of8q(.e 9o2qq evnfrqk)a+zrk5 40 cm. The lift raises 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)
