Verify Newton's law of cooling for a rectangular iron bar of dimension 25cmX7cmX4cm having mass 7kg & with initial temperature of 660C. Repeat the experiment with three more sets of parameters of your choice so as to prove the law.
AIM OF THE EXPERIMENT:
To verify Newton's law of cooling for a rectangular iron bar of dimension 25cmX7cmX4cm having mass 7kg & with initial temperature of 660C. Repeat the experiment with three more sets of parameters of your choice so as to prove the law.
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T(t) = Ts + (To – Ts) e-kt
Where,
t = time,
T(t) = Temperature of the given body at time t,
Ts = Surrounding temperature,
To = Initial temperature of the body,
k = Cooling constant.
CODING:
// Defining the variables
T0=input("Initial temperature of object(in degree celsius)")
Ts=25; //Temperature of the surroundings in degree celsius
k=0.05; //constant
t=0:1:1; //Time Interval in sec
//Computation of Newton's Law of cooling
Tt=Ts+(T0-Ts)*exp(-k*t);
//Plotting the graph
plot(t,Tt);
xlabel("Time(s)");
ylabel("Temperature decay");
//Temperature after 60sec
Tt=Ts+(T0-Ts)*exp(-k*60);
disp("Temperature of the object after 60sec is ",Tt,"C");
OUTPUT:
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