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L07-Experimental Design

L07-Experimental Design - ` Design V ertical distance...

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Vertical distance ` Design Proposal 1. The independent variable is the vertical distance or drop height of the swing of the bob, which can be measured with a meter stick. 2. The dependent variable is the velocity of the bob at the lowest point of the swing. I can find this value by dividing distance travelled by the time it takes to travel that distance. I can find the distance by using the length of the string and the angle at which I place the photo gates to determine the length. I can find the time by using a photo gate to measure the time it takes to travel the set distance. 3. The things I should keep constant are string length, size and mass of bob, and position of photo gate. I can measure string length by using a meter stick. I can measure size and mass of bob by using a scale. I can measure the position of the photo gate by positioning them where I want the travelled distance measured. 4. I will use a string length of 0.50 m because it is a reasonable value and it easy to measure and calculate with.
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