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Vector Forces

# Vector Forces - the angle gives you the resultant Which...

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Section 1 Vector Forces February 19, 2007 Anthony Marro Jason Janscak, Jason Halwick Abstract In this experiment we will use the force table to find the force that balances two other forces. This will be done by finding the resultant of adding two vectors by three different methods, the experimental method which uses pulleys and weights. The second method is the component method in which the two forces are added together using their x and y components of force. The third and final method is the graphical method where you draw the forces to scale on a graph.

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Section 1 Analysis: Component Method: The final answer after using the trigonometry identity for tan -1 is 60.9° Graphical Method: To obtain the resultant from the graphical method, you draw the two vectors to scale, with the B vector’s head being placed at the tail of vector A. The resultant can then be found by drawing a vector from the tail of vector B to the head of vector A, then measuring the magnitude of it, and
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Unformatted text preview: the angle gives you the resultant. Which method do you think would get a greater error? I feel that the graphical method would get more of an error is the graphical method, because using the graphical method contains no mathematical equations, and it only involves drawing lines. This creates a greater chance of human error, in both the drawing of the lines, and the interpolation of the data from the graph. Conclusion: In conclusion the two methods can be used to find the equilibrium force. These methods produced very small percent errors. The percent error was only .4247%, with a possible source of error being that we did not use the string that was originally designed for this experiment. Instead we used a more dense string, which might have caused the small source of error that is evident in our percent error....
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Vector Forces - the angle gives you the resultant Which...

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