Thursday, April 28, 2011

best cannon.

A cannon is basically a form of weapon that requires some sort of gunpowder to fire. Cannons were extremely popular during the World Wars. Cannons have been developed over many years from other projectile weapons to the ones we have now. Many countries have designed different sorts of cannons.

Obviously in our Physics class, we won't be making a real cannon but something similar to that. Mr. Chung showed us an example made from the previous semester. It was basically a few popcans secured by duct tape and at the top, was the object that would be shot. It looked like two foam cups taped together. It was cool to see when it was ready that the cannon actually worked and projected the object.

For the design it looked like a real cannon one that had a wide base that seemed to prop up the whole structure and the cannon was positioned at an angle almost 45 degrees. The cannons we build will be fixed but I remember seeing short clips of real cannons being fired and they were adjustable.

Can't wait to build our own cannon! (:

Thursday, April 14, 2011

acceleration lab results.

our structure.

As you can see we used the CN Tower design for our structure with a firm and heavier base which was able to support the structure. We rolled newspaper into thin rolls and attahced them creating a very long pole. It was around 2m and the highest standing structure in the class :D !

cn tower.

We were faced by another challenge in Physics class. We had to build a structure only out of 4 sheets of newspaper and a table wide strip of tape. We had to build a structure that had to be as high as possible and one that was very sturdy.

The CN Tower in downtown Toronto was one of the tallest man made structure from 1975-2007! It was the record holder for many years and definitely many people visited this building and still do today. The CN Tower is 553.3 m. We sort of based our model based on the CN Tower because we made the base stronger and heavier.

What makes the CN Tower so tall is the additional rod at the top attached to the viewing deck. So in our structure we incorporated this idea. We tried to make a strong and heavy paper of the material we had and save one piece of newspaper and make the thinnest rod we could make. We did this by ripping the newspaper into 4 large strips and rolled them as tightly as possible and then attached them. Adding an additional piece of tape we were able to make our structure even taller.