Group 20: Blog #2

A: We are going to use a screw- by having a ball fall down and travel through a funnel attached to a tube that wraps around an upright 2x4. We will also use multiple pulleys, where a marble will push a block of wood into one cup and cause it to fall while the other cup rises and knocks the second marble off a ledge to fall down a tunnel. Lastly, we will use various inclined planes for the marble to travel down to the next checkpoint of the project.

B: Energy transfers we plan to incorporate are potential energy of gravity to kinetic energy: when the marble is resting on an object and gets hit by a lever. We will also have kinetic energy to potential energy: when a moving marble hits an object after traveling down an inclined plane and then stops. We will have chemical energy transfer into light energy when the circuit is completed, which is caused when the ball hits a clamp and completes the circuit, allowing there to be light. We will also have elastic potential energy to kinetic energy: when the rat trap triggers, it pulls a string that is attached to a pole, which causes the pole to fall down.

C: We have worked together pretty well. Chris has done a lot in providing ideas like how to get the circuit to work and how to launch the golf ball and providing a drill to help speed up the building process of the project. Ethan has helped put the system together also by helping place tracks where they need to be. We have all worked on the project during our free periods and before and after school. Justin and Eddy have helped with the outline of the design and have provided assistance with a hot glue gun some other tools(like a second drill and scissors) that have helped putting the project together more efficient.