1 files changed, 21 insertions, 0 deletions
diff --git a/167/CH4/EX4.4/ex4.sce b/167/CH4/EX4.4/ex4.sce
new file mode 100755
index 000000000..be1fa0418
--- /dev/null
+++ b/167/CH4/EX4.4/ex4.sce
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+//ques4
+//Expansion of a Gas against a spring
+clear
+clc
+V1=0.05//initial volume in m^3
+V2=2*V1//final volume in m^3
+A=0.25//area of cross section in m^2
+k=150//spring constant in kN/m
+//(a)
+x=(V2-V1)/A//displacement of piston in m
+F=k*x//Spring force  in kN
+P1=F/A//pressure in kPa due to piston
+Po=200//initial pressure in kPa
+P=P1+Po;//final pressure in kPa
+printf('\n(a) Final pressure = %.0f kPa\n',P);
+//(b)
+w=(Po+P)/2*(V2-V1);//in kJ
+printf('(b) Work done = %.0f kJ\n',w);
+//(c)
+wspring=(P-Po)/2*V1;
+printf('(c) Fraction of work done by spring = %.0f kJ\n',wspring);