Hello! Last class we built a hammer and attached it to a cam shaft. Using a crank we were able to move the hammer up and down hitting axles (nails) through different gears. As the experiment continued we noticed that different gears were tighter creating more friction around the axle (nail). Later we expanded and attempted to add more weight on to our hammer to increase its efficiency! I was very impressed with everyone’s understanding on the cam shaft and its different positions! I look forward to next week when we’ll be building a sweeper like the ones we see in calgary to pick up rocks!