Monday, March 28, 2011

Wheel and axel

I have learned that a wheel and axel make work much easier and a screw can also make it much easier to lift objects. The mechanical advantage depends on how big the wheel is and how big the threads are. The wider the thread the more force it takes to lift the object. I also learned the most effective machines have the lease MA.
i cant believe it because the mouth seems like it had just started no lie it's so crazy!!!!!!!!!!!!!! i have learn that 2 things that effected the wheel and axlewas the wheel radius, and how the length of a the threads. and the greanter the number of the threads the and the greater the wheel the less force it needed to turn it
Well Ive learned that you can combine the wheel and axle with a screw to make it a lot easier to lift an object. The MA all depends on the size of the wheel and how far apart the threads are on the screw. The farther apart the threads on the screw make the MA greater. If the machine is effective though it will have a very low MA.

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!!