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clc
clear
printf("example 8.5 page number 341\n\n")
//to find viscosity of oil
diameter=0.6; //in m
disk_distance=1.25*10^-3; //in m
speed=5; //revolutions/min
torque=11.5; //in Joules
//we know that torque= pi*omega*viscosity*radius^4/2*disc_distance
viscosity=(2*disk_distance*torque)/(3.14*(10*3.14)*(diameter/2)^4);
printf("viscosity = %f Pa-s",viscosity)
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