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Two cylindrical vessels fitted with pistons A and B of area of cross section 8 cm2 and 320 cm2 respectively,are joined at their bottom by a tube and they arecompletely filled with water. When a mass of 4 kg isplaced on piston A,find : (i) the pressure on piston A,(ii) the pressure on piston B, and (iii) the thrust onpiston B. |
| Answer» LET E be the effort applied on the SMALLER piston A and L be the load required on the larger piston B. Area of cross section of pistion A=8cm2Area of cross section of pistion A=320cm2(i) Pressure acting on piston A in the downward DIRECTION =THRUST/Area=E/8=4/8=0.5∴Pressure acting on water =E/8=0.5 (according to Pascal's Law)(ii) ∴ Pressure acting on piston B=E/8=0.5 (according to Pascal's Law)(iii) Thrust acting on piston B in the upward direction =Pressure ×Area ofB=8E×320=160 | |