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+clear
+//given
+//find out power required to do in three cases:
+//
+w=150.
+d=8.
+Work=w*d
+printf("\n \n work necesary %.2f ft-lb",Work)
+
+//case(1)
+t1=2.
+power=Work/t1
+Horsepower=power/550.
+printf("\n \n powe requiered for time %.2f ft-lb",power)
+//case(2)
+t2=8.
+power=Work/t2
+Horsepower=power/550.
+printf("\n \n for power requiered at t2 %.2f ft-lb per sec",power)