A developer is having a single-lane raceway constructed with a 100 mph design speed. A curveon the raceway has a radius of 1000-
ft, a central angle of 30 degrees, and a PI station at 1125 10.If the design coefficient of side friction is 0.20, determine the superelevation required at the design speed. Compute the degreeof curve, length of curve, PC station, and PT station.
2 answers:
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Answer:-0.4199 J/k
Explanation:
Given data
mass of nitrogen(m)=1.329 Kg
Initial pressure=120KPa
Initial temperature 300k
Final volume is half of initial
R=particular gas constant
Therefore initial volume of gas is given by
PV=mRT
V=0.986\times 10^{-3}
Using =constant
=
=337.066KPa
=
and entropy is given by
=
+
Where, =
=0.6059
=
=0.9027
Substituting values we get
=
+
=-0.4199 J/k
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Explanation:
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