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An Investigation into Ball bearings different speeds and surface areas, through glycerine.

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Introduction

An Investigation into Ball bearings different speeds and surface areas, through glycerine. Myself and my experiment partner recorded some times of metal ball bearings passing through Glycerine, a type of oil. There were nine different ball bearings used, ranging from a minute diameter of 1.45 mm to a large 24.92. Three different times were recorded for each ball bearing. From my knowledge I know that if an object has the same density as the liquid it is in, then it will not sink or float, but stay still, just as the liquid will. ...read more.

Middle

This owes to the fact that if the ball bearing is so large that the liquid, glycerine, cannot pass it, easily. Ball bearing [large] Liquid has to squeeze past the ball bearing Plastic container tube The liquid substance [Glycerine] To carry out this experiment we used the measurements in millimetres and centimetres. The amount of time was measured in seconds, not to minute's e.g. 125.83 SECONDS. We used stopclocks to time the ball bearing passing from the start of the seventy centimetres to which we calculated the speed. ...read more.

Conclusion

As soon as the ball reached the bottom line, the stopwatch was stopped. This then gave us the amount of time it took the ball bearing to travel seventy centimetres. In this experiment, the ball bearings diameter is changed. The ball was timed three times, so as to give us three times to look at. The liquid substance, Glycerine, was kept the same. Nothing was added to the Glycerine, and none of the Glycerine was taken away. In the same way, the Glycerine was not made thicker or in any way thinner. The two lines of where we timed the ball were always kept the same, seventy centimetres. ...read more.

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