1.Wheel and axles are a simple machine. 2.Knobs on doors, cars and, screw drivers are wheel and axles. 3.Radius of a circle is the point from the center of the circle to the end of the circle. 4.Wheels and axles are very similar they both have loads, effort and, fulcrum. 5.Wheel and axles let you get leverage to unscrew a screw. 6.When the wheel on the screw driver is bigger it is even easier to unscrew a screw. 7.Cams are discs or loads that turn and lifts up the follower.8.Some followers go under the cam or over the cam. 9. There are round cams and flat followers. 10.  The distance between the axle and the closest edge of the cam. 11. The distance between the axle and the farthest edge of the cam. 12. Cams don’t have to be on center. 13. Putting weighting the followers help keep the cams on the weights. 14. Cams can have really weird shapes. 15. Cams are internal combustion engine. 16. Cam shafts ar easels. 17. Crank shafts are turned by pistons. 18. An overhead cams and on top. 19. Spring hold valves against the valves on a crank. 20. Inside a cillindar have pistons the move up and down.

That was my notes from my tech class on October 30th!!