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Mechanical Engineering QUESTION #2408
Question 1
In a hydraulic system with two pistons of areas \(A_1\) and \(A_2\), if force \(F_1\) acts on piston 1, the force \(F_2\) on piston 2 (Pascal's law) is:
  • \(F_2 = F_1 A_1 / A_2\)
  • \(F_2 = F_1 A_2 / A_1\)✔️
  • \(F_2 = F_1 + \gamma(A_2 - A_1)\)
  • \(F_2 = F_1\)
Correct Answer Explanation
Pascal's law: pressure is transmitted equally throughout a static fluid. \(p=F_1/A_1\). Same pressure acts on piston 2: \(F_2=pA_2=F_1A_2/A_1\).