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+clear
+//
+//
+
+//Initilization of Variables
+
+d1=200 //mm //External Diameter of shaft
+t=25 //mm //Thickness of shaft
+n=200 //rpm
+theta=0.5*%pi*180**-1 //Radian //angle of twist
+L=2000 //mm //Length of shaft
+G=84*10**3 //N/mm**2
+d2=d1-2*t //mm //Internal Diameter of shaft
+
+//Calculations
+
+J=%pi*32**-1*(d1**4-d2**4) //mm**4 //Polar Modulus
+
+//Torsional moment
+T=G*J*theta*L**-1 //N/mm**2
+
+//Power Transmitted
+P=2*%pi*n*T*60**-1*10**-6 //N-mm
+
+//Max shear stress transmitted
+q_s=G*theta*(d1*2**-1)*L**-1 //N/mm**2
+
+//Result
+printf("\n Power Transmitted is %0.2f N-mm",P)
+printf("\n Max Shear stress produced is %0.2f N/mm**2",q_s)