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the cylinder of a water pump is 4 cm abo...

the cylinder of a water pump is 4 cm above the surface of water in a well. If the readius of the cylinder of the pump be 5cm, calculate th e force acting on the piston while the pump is working.(Density of water `= 1000 kg m^(-3)`)
[ hint : force = area x pressure due to 4-m high column of water .]

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The correct Answer is:
308 N
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