Rube Goldberg machine Rube Goldberg machine Squeeze the toothpasteSqueeze the toothpaste

Wang Yechun

Li Borui 3P3

Yu Zhuoxing

The videosThe videos

http://www.youtube.com/watch?v=2DtwJ5OrkWghttp://www.youtube.com/watch?v=2DtwJ5OrkWg view of view of device (1)device (1)

http://www.youtube.com/watch?v=jrvWrolga0shttp://www.youtube.com/watch?v=jrvWrolga0s view of device view of device (2)(2)

http://www.youtube.com/watch?v=2eDoqAHkMxYhttp://www.youtube.com/watch?v=2eDoqAHkMxY view of view of device (3)device (3)

http://www.youtube.com/watch?v=hot7beMqFeohttp://www.youtube.com/watch?v=hot7beMqFeo main main procedure.....procedure.....

Step 1 Step 1

• Cut the string that connect with the Cut the string that connect with the board.board.

• So that the board will form a slope So that the board will form a slope and the ball on the board will hit the and the ball on the board will hit the bottle underneath. bottle underneath.

Step 2Step 2

• The balls dropped hit the bottle.The balls dropped hit the bottle.

• The bottle which is placed on the The bottle which is placed on the point of transition, will slide down point of transition, will slide down and pull the string that tie up on it. and pull the string that tie up on it.

Step 3Step 3

• The bottle is at one side of a lever, The bottle is at one side of a lever, the slide of it will pull up another side the slide of it will pull up another side of the lever, which is a cardboard, of the lever, which is a cardboard, that fixes in the potato chip bottle to that fixes in the potato chip bottle to stop the inside from sliding.stop the inside from sliding.

Rube Goldberg machine

Step 4Step 4

• The cardboard is pulled away and The cardboard is pulled away and then the ball will slide through the then the ball will slide through the track and hit the switch which is at track and hit the switch which is at point of transition, too.point of transition, too.

Step 5Step 5

• The switch is hit and it is switched on The switch is hit and it is switched on (the part is most difficult one since (the part is most difficult one since the ball cannot hit accurately at the the ball cannot hit accurately at the switch, it may slide away)switch, it may slide away)

Step 6Step 6

• The switch is on so that the fan is The switch is on so that the fan is turned on. turned on.

Step 7Step 7

• The fan is turned on so that it will The fan is turned on so that it will blow the can slide down the slope.blow the can slide down the slope.

Step 8Step 8

• Finally, the slided can will roll past Finally, the slided can will roll past the toothpaste and it is successfully the toothpaste and it is successfully squeezed.squeezed.

Rube Goldberg machine

The endThe end

• The video is too big that cannot be The video is too big that cannot be uploaded to the wikispace and we uploaded to the wikispace and we have 4 videos. 3 are the script of the have 4 videos. 3 are the script of the device, 1 is the procedure. We will device, 1 is the procedure. We will hand in the video by Wednesday.hand in the video by Wednesday.