this past week when i was driving home from school i experienced a very unpleasant circumstance. When i was only about five minutes from my home i stumbled upon a very sharp nail which punctured a hole in my front right tire. i thought to myself, "i dont know how to change a tire...what am i going to do?" That is when i called my dad. He was there in no time and he showed me how to change the tire. he explained first where to retrieve the car jack from and then he went on to explain how to use this strange contraption. the jack consisted of a lever and the part that lifts up the car. he went on to lift the jack but the car was very heavy and he was having some difficulty. This is when i became the teacher, i used the knowledge i had gained during the day of school in physics class to help him. we had learned that the perpendicular force*radius is equal to the torque so i told him that if he pushed further from the turning point then it would apply more torque and it worked. i also told him that the same idea applied to the wrench that you use to remove the bolts holding the tire on. We finished changing the tire in no time and by the end of it me and my dad had both learned something new that day.
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