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+//Initilization of variables
+W=1800 //lb
+r=2000 //ft
+v=58.7 //ft/s
+g=32.2 //ft/s^2
+//Calculations
+F=(W*v*v)/(g*r) //lb
+//Result
+clc
+printf('The frictional force to be exerted is %f lb',F)