Consider the cistern manometer shown in Fig. P2.58. The scale is set up on the basis that the cistern area \(A_{1}\) is infinite. However, \(A_{1}\) is actually 50 times the internal cross-sectional area \(A_{2}\) of the inclined tube. Find the percentage error (based on the scale reading) involved in using this scale.

Figure P2.58

Transcribed Image Text:

Air PH Air Oil, S = 0.85 0=30 A PL