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The Light Bulb! “ Just to let you know you have a good idea”

The Light Bulb! “ Just to let you know you have a good idea”. By: Heather Boynce, Chanci King, and Austin Graham. Step 1:. A golf ball starts on the top of a 19 in. ramp having potential energy and rolls down the ramp gaining kinetic and rotational energy. mgh = ½ mv 2 + ½ Iw 2

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The Light Bulb! “ Just to let you know you have a good idea”

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  1. The Light Bulb!“ Just to let you know you have a good idea” By: Heather Boynce, Chanci King, and Austin Graham

  2. Step 1: • A golf ball starts on the top of a 19 in. ramp having potential energy and rolls down the ramp gaining kinetic and rotational energy. • mgh = ½ mv2 + ½ Iw2 • Once at the bottom, the golf ball hits a wooden block and knocks it over, where the conservation of momentum is reserved between the ball and block. • Mvball = mv’ball +mv’wood • Vball – vwood= -(v’ball – v’wood)

  3. Step 2 and 3: • The block pulls a string which releases a tennis ball with potential energy. • The tennis ball rolls down a pipe gaining kinetic and rotational energy. • mgh = ½ mv2 + ½ Iw2 • The tennis ball is projected onto a balancing piece of wood with some velocity and makes the wood unbalanced so that it tilts one end downward.

  4. Step 4 and 5: • When the unbalanced wood tilts one end down, the other end rises and pulls on a string. • The other end of the string is attached to small rod which holds up a lever. The string pulls the rod out from under the lever causing it to fall. • Once the lever falls it gains kinetic and rotational energy and lands on a mouse trap causing it to snap. • As the mouse trap snaps, it pulls another string. This string is attached to a light bulb and causes the bulb to turn on.

  5. Design and Construction Issues: • The paper clips used to hold the pipe in place on the wood posts slows the tennis ball down as it goes down the slope. • When the tennis ball is projected onto the balanced wood it has to hit in the right spot so that it does not fly off. • Developing our contraption to incorporate the four required concepts. • Adding support to the balanced wood so that the tennis ball rolls down the desired direction.

  6. ½ I w2 mgh 19 in. ½ m v2 Conclusion: • During this project, we incorporated what we learned this semester using calculations and concepts from class to build our very own overly-complicated device. mgh ½ mv2 2.5 in. ½ Iw2 mgh

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