Find the approximate height of a mountain by using mercury barometer Date of Exam May 1994 Subject Hydraulics and Geotechnical Engineering Problem Assuming specific weight of air to be constant at 12 N/m3, what is the approximate height of Mt. Banahaw if a mercury barometer at the base of the mountain reads 654 mm and at the same time another mercury barometer at the top of the mountain reads 480 mm. A. 1642.3 m C. 3051.4 m B. 1934.5 m D. 1735.2 m Answer Key Click here to show or hide the answer key [ B ] Solution Click here to expand or collapse this section Barometric head $h_b = 654 - 480$ $h_b = 174 ~ \text{mm Hg}$ Approximate height of Mt. Banahaw $h = h_b \times \dfrac{\gamma_{\text{mercury}}}{\gamma_{\text{air}}}$ $h = 0.174 \times \dfrac{13.6(9810)}{12}$ $h = 1934.532 ~ \text{m}$ ← answer Category Hydraulics Mercury Barometer Barometer barometric pressure Barometric Head Height of Mountain Log in or register to post comments
