Science Fair Projects

The Effect of Ball Diameter on the Time It Takes to Fall


The objective: The purpose of this experiment is to investigate the effect of ball size on dropping speed in viscous liquids.


Basically, all that is needed is an assorted number of balls, a stopwatch, glycerin, and a cylindrical container. The container is filled with glycerin, the ball is dropped into the cylindrical container and the speed is timed. The results were then recorded on a table and graph.


The average falling time of the 1.6 millimeter ball was 37.075 seconds, the average falling time of the 3.2 millimeter ball was 10.15 seconds, the average falling time of the 4.8 millimeter ball was 5.335 seconds, the average falling time of the 6.4 millimeter ball was 36.275 seconds, the average falling time of the 7.9 millimeter ball was 2.9375 seconds, the average falling time of the 9.5 millimeter ball was 2.345 seconds, the average falling time of the 12.7 millimeter ball was 2.96 seconds, and the average falling time of the 19.1 millimeter ball was 8.355 seconds. While the balls were being dropped, I found out that small balls left touching the glycerin will sit on its surface tension, allowing more precision on the timing. The results that came out were almost perfect, and were ripe for analysis.


My original hypothesis was that the balls falling speed would increase with its diameter. The gain in seconds per 1.6 millimeters would be estimated to be not in definite intervals, but to be somewhat exponential. With the given results, my hypothesis was fairly correct; the larger the ball, the faster it falls, but the hypothesis of how much? was not exactly identical to the results.

This project is about dropping balls of different diameter to record effect in their dropping speeds.

Science Fair Project done By Jason A. Lee



<<Back To Topics Page........................................................................................>> Next Topic


Related Projects : Drag Reduction of a Mini Cooper , Testing Turbines for Maximum Power , Effects of Magnetic Fields on Water Flow , The Shapes of Boat Hulls Matter, Do Different Fin Designs Affect a Rocket Maximum Altitude , Landing Humans on Mars, Effect of Varying Air Outlets on the Stability of a Hovercraft, How High Can She Fly , Producing Electricity with Different Angles and Measurments for Wind Turbine Blades , Searching for Stability , Rocketology , Shape and Surface Texture , Effect of Blade Type and Blade Angle on Power Generation , The Green Machine , Efficiency of Different Savonius Wind Turbines

Copyright © 2013 through 2015