A machine is anything that multiplies or changes the direction of a force, and a pulley is no exception. This simple machine that consists of a wheel with a rope or cable around it gets its name because we use it to pull things. A fixed pulley changes only the direction of the force,...
Screws, which convert linear motion to rotational motion, are commonly regarded as ways to hold things in place. They often fasten parts of complex machines to each other. This obscures the fact that screws are machines, or more accurately the primary component of certain machines in their own...
Using policy to stabilize the economy: The government has the ability to influence the level of output in the short run using monetary and fiscal policy. There is some disagreement as to whether the government should attempt to stabilize the economy. Which of the following are examples of a...
A simple machine for kids is a device that makes work easier by using basic principles of physics. Some examples include pulleys, levers, inclined planes, and wheels and axles. These machines can be found in everyday objects like playground equipment, tools, and even household items. Learning ...
That’s it; that’s all I got. I will say, however, that I am currently consulting on a project in Fells Point, Baltimore. We were looking for ways to make it easier to lift heavier things up to the third floor though a narrow attic access. I suggested, in the spirit of the wate...
things: a force, a displacement and a cause. For example, if you picked up a book and placed it on the top shelf of a bookshelf, the force would be you lifting the book, the displacement would be the movement of the book and the cause of the movement would be the force you ...
Trade-offs of simple machines One of the keys to understanding how a simple machine makes things easier is to realize that the amount of work a machine can do is equal to the force used, multiplied by the distance that the machine moves or lifts the object. In other words, we can ...
Let’s All Just Try And Be Decent:It’s awful that you had to use the old one in that condition. It’s amazing that we have things like this but even the new one looks like it could be better. I hope the new one is more comfortable and that soon they’ll be able to replace ...
Major industrial polymers, chemical compounds used in the manufacture of synthetic industrial materials. In the commercial production of plastics, elastomers, man-made fibres, adhesives, and surface coatings, a tremendous variety of polymers are used. Th