How do you ultilize physics?

Answer 1

A knowledge of physics will help you solve any practical problems you may have. For instance I was working outside and I had to move two tons of rock. My wheel barrel's wheel was flat so it was a serious pain moving the rocks. Finally, I thought about the problem. With the wheel flat on the wheel barrel I was working against sliding friction rather than rolling friction. Which was a serious pain. In order to make my life easier I had to find a way to move the rocks with the least amount of work done. If I wanted to do the least amount of work I decided I should be acting against the least amount of friction. So instead of shoveling up the rocks than carrying them to the wheel barrel and then dragging the wheel barrel and finally dumping it. I just threw the rocks through the air, the only work I had to do was to give the rocks their initial velocity and after that their momentum helped them travel the rest of the way. Without my knowledge of physics I might have not realized how to solve this problem. There is another case in which I was sitting in the lab at my university and my professor was getting in an argument with a grad student. The grad student was a mechanical engineering major who was designing a component for his robot. Well the argument was about the amount of energy that could be produced when using this type of mechanism. The grad student believed that if he did some funny things with his mechanisms he would get more energy going out than there was going in. My professor having a strong background in physics pointed out to him that if he were to place all of his mechanisms in a black box then what came in had to come out. Or the state of the system at the start had to be the state of the system at the end. This basic observation is what makes an understanding of physics extremely useful. Physics is a science based off of abstractions. So whenever a physicist comes across a problem he simply removes the extraneous details that complicate the situation and uses only the most essential information to solve the problem. If you were going to utilize physics to aid you in some monetary fashion then it would be useful to have an understanding of the conservation of energy before you invested in some machine that was going to do more than work than the work put into it. Things like this happen all the time like the myth I used to here about in high school about some genius inventing an engine that could go a hundred miles off of one gallon of gasoline. A person who knew enough physics would know that there is only so much energy stored in a gallon of gasoline. Physics can be utilized in a myriad of different ways it is only up to the person who wields the knowledge and what there imagination can do that makes the difference.