The story is told about the sergeant who stopped a...

The story is told about the sergeant who stopped at the jewelry store every morning at nine o’clock and compared and reset his watch with the chronometer in the window. Finally, one day the sergeant went into the store and complimented the owner on the accuracy of the chronometer. “Is it according to time signals from Arlington？” Asked the sergeant. “No,” said the owner, “I set it by the five o’clock cannon fired from the fort each afternoon. Tell me, Sergeant, why do you stop every day and check your watch？” The sergeant replied, “I’m the gunner at the fort!” Is the feedback prevalent in this case positive or negative？ The jeweler’s chronometer loses 3 minutes each 24-hor period and the sergeant’s watch loses 2 minutes during each eight hours. If the time of the chronometer is correct at 9 o’clock this Monday morning, what is the net time error when the cannon is firing at the fort of the next Monday？