Build a Compund Machine

Our Machine with an IMA of 28

In our compound machine, we combined all of our simple machines and made a compound machine, because we wantedto get the heighest IMA we could, this is how the IMA grading was determined

Grading is as follows:

If IMA is.....

A+ = 90

A =70-89

A - = 40-69

B+ = 28-39

B=20-27

C = 14-20

D = 8-13

F= 0-7

 

We got an IMA of excactly 28, so we were proud with a B+. Jack and Chris got an IMA of 247, so pretty much 200 more IMA than us. The other students used a pulley though, we did not have a pulley because it was destroyed in the process of making this compoud machine. We used a lever and a wheel and axle. We had to make a bigger wheel to get a greater IMA. Everyone used box of nails to get their IMA, and we used two which were 4.76N each. We should have made a pulley to start with so we could do better.

 

I think I learned that I should listen to Mr. Atkins and make a pulley next time. The thing that suprised me was that our IMA got us a B+ on the project. Next project we have to do everything much better so that our IMA and project could be a lot better.