[填空题]
The small piston of a hydran8b : *ifdtm/rulic lift has a diameter4 x j*xq:r7ky3e1fy 9mmkq:ne of 8.0 cm, and its large piston has a diamete17*y43 ex9f:nrxkmyk m j: qqer of 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)
