Marble Rolling On A Moving Sidewalk

Historian anne friedberg writes.

Marble rolling on a moving sidewalk. The ultimate diy recycled marble run use up those old milk cartons and paper tubes to make a super creative marble run. The paris trottoir was a two mile long electric three tiered sidewalk. One trackway was stationary the next moved at two and a half miles per hour the. The total time the marble has to fly.

Record the rolling distances. This is a strictly vertical. After making their predictions students can roll the marble down their ramp at the various starting points. Discuss these results in relationship to their predictions.

The reason the ball hits the ground after being launched is because of the earth s gravity 9 8 m s2. That distinction would go to the mysterious and quite unreliable moving sidewalk at the 1893 world s fair in chicago but the two and a quarter mile long paris moving sidewalk what some would call the wooden serpent would influence how many people thought about the future of urban transportation for generations to come. X 1 5 m s 0 9 seconds or the marble will land 1 35 meters from the edge of the table. So plugging in the numbers we ll get equation 5.

This wasn t the first moving sidewalk that was open to the public. We have been looking at le trottoir roulant the moving sidewalk which in its day was one of the most famous marvels at the universal exposition of 1900.