The Wheel and Axle!!!!

In this activity we learned how the wheel and axle helps you lift things that are to heavier for you to lift. The MA factor was higher at some times and lower at sometimes. If the MA was higher then some of the others we would have a very good machine there. The MA is higher the anything else. The rivets on the screw make it more high efficient that you would be able to use it for anything.

the wheel and axel help to move an object, and the screw increases the distance but decreases the force and the greater the thread dencity the greater the Ma is just like on the wheel and axel the greater the circumfrance the greater the greater the Ma. and when combined the wheel and axel and the screw can make the force sinificanly decrease.

The screw and the Wheel @ Axle!!!

By doing this experiment online I learned that the wheel and axle makes work easier. When you lift a block vertically you can use a wheel and axle. The two things that I noticed that made a difference in the Mechanical Advantage is the radius of the wheel and the number of threads per meter. When the wheel had a large radius, and the screw had a denser number of threads the mechanical advantage would be higher. If a machine was efficient the Mechanical advantage would be high, if it is efficient, the less work you would have to produce.

The lab tought me that combineing simple machines greatly increases the MA, and that by useing simple machines properly it can decrease the force aplied to move the object. these labs worked well by getting peoples attention by using animated characters and alowing you to manipluate the difrent parts of the simple machines.

Axel, wheel, and screw

What I learned from the online activity. Two things that effected the wheel and axel were the radius of the wheel, and how far apart the threads are. The greatest the wheel and thread number is gives you the most Mechanical Advantage with the wheel and axel. I might have gotten the screw mixed up, for a screw to have the greatest MA, it must have the greatest number of threads. Side note: If you want a greater MA you want a machine with the highes number.

Online Activity

During the activity I learned that combinding all these machines will actually help you will all that you need. When you have a high MA, that means that the screw was at least higher, if you have a lower MA that means the screw was lower.

The screw & the wheel & axle

In this activity I learned that you can combined the wheel & axle with the screw to make it even easyer to lift an objcet. The size of the Wheel and how far apart the threads are make the MA. The farther apart the threads on the screw make it have a higher MA. If a machine is very effective the MA will be low.

The Screw and the Wheel & Axle

Wow can you believe March is almost over!!! Any way, today (or maybe last Thursday) we finished up the online activities. The last activity was about the wheel and axle and the screw. So what did you learn? What two things affected the MA of the wheel and axle? Which situation allowed the wheel and axle to have to highest MA? What makes the screw have a high MA? Just as a side note, if a machine is very efficient, with the MA be high or low? Tomorrow we talk about energy!!

levers

Levers are one of the most important simple machine. They are all around us and we don't realize it. We use levers for almost everything. things like turning on lights, lifting things, and opening cans. There are many types of levers, your arm is considered a lever. Levers are clasified buy their fulcrum placement and where you aply fource.

Levers

When the fulcrum is close to the object being lifted it requires less force. THe relationship of the input force and out put force was easier when the fulcum force was closest to the object being lifted. The inclined plane was easier to use when it was longer. If the inclined plane is too long it would take forever to get to the top

levers!!!!

I discovered that the wedge is easier to brake a rock. The lever was the easiest, because just move what you are using to make it work. The relationship is they both work together.

i discovered that they are very helpful. They help you move something very heavy to a spot. The long helps more then the short. The short one would help if you had something light to move. The different lengths would help.

Lever YAY!!

The fulcrum is the biggest part of the lever, it is the toast with the jam, the straw to the berry, and so on. When the fulcrum is closer to you it is harder to move something and when it is farther away it gets easier and easier. The longer the incline plane is the easier it is to get up and the shorter it is the harder it is. The weather and the height of the ramp are the factors that might affect it.