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In a hydraulic press , a force of 40N is applied on the effort piston of area 0.4m2. If ...

In a hydraulic press , a force of 40N is applied on the effort piston of area 0.4m2. If the force exerted on the load piston is 400N, the area of the large piston is
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  • A 4m2
  • B 8m2
  • C 2m2
  • D 1m2
Correct Answer: Option A
Explanation:
Pressure developed in the effort piston = F/a
∴F/a = 40/0.4 = 400/4 = 100Nm2
this pressure is transmitted to the larger piston of area A; => P = F/A
∴ 100 = 400/A
=> A = 400/100 = 4m2

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