PHY 253 Properties of Materials
NAME:
(7.1) A U -tube has two immiscible [non-mixing] fluids in it, as illustrated in the figure.
Both columns are open to the atmosphere. The density of the fluid in the column on the
left is [initially] unknown. The fluid in the right column has density ρ = 1200 kg/m3 . The
heights of the fluids in the two columns are labelled in the figure. Take g = 10 m/s2 and
Patm = 101300 Pa.
20 cm
30 cm
10 cm
Determine the density of the fluid in the left column.
(7.2) Another such tube with a fluid of unknown density in the column on the left appears
in the figure below.
10 cm
30 cm
20 cm
Determine the density of the fluid in the left column.
Spring 2026
Problem Set #07