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  • June 2013
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Acceleration of a trolley
Aim: to determine the acceleration of a trolley cart rolling down a 30 degree ramp with a ticked timer. Hypothesis: I predict that the trolley cart WILL accelerate slower the more mass it has on it, but have a faster acceleration in the long run. Materials: Trolley cart, Leeds, weights x2, ticker timer, power pack and a banana clip. Procedure: Gather materials; elevate the ramp so it’s 30 degrees and place ticker timer on top of ramp. Then thread some ticker tape through the ticker timer and tape the ticker tape to the back of the trolley cart, start trolley down the ramp when ready and when it reaches the end stop ticker timer. Result table:

Section| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 10| 11| 12| Total time| 0.0| 0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8| 0.9| 1.0| 1.1| 1.2| Length of section| 0| 13| 20| 27| 36| 41| 51| 58| 64| 70| 73| 80| 120| Interval| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| 0.1| Average speed| 0| 130| 200| 270| 360| 400| 510| 580| 640| 700| 730| 800| 1200| Calculation: Final Speed – Initial Speed

Final time – initial time = 972.72`
What happened?
We tried to find the acceleration of a trolley cart going down a ramp on a 30 degree angle by measuring the acceleration with a ticked timer. The cart rolled down the ramp. Why did it happen?
The trolley cart rolled down the ramp because of force and mass. Mass helping downward force of the trolley cart. Improvements?
+ Smoother ramp, accurate elevation of ramp, stable ramp, have a different variety of weights, more test runs.

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