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Vector Lab IVC 2009

# Vector Lab IVC 2009 - Vector Laboratory-Overview Before we...

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Vector Laboratory--Overview Before we begin the vector laboratory let us become familiar with a few ideas that will be examined in this lab. Pg 1 As the picture shows we are going to hang weights at various angles in such a way that all the tensions (forces) are in equilibrium. The table is a metal disk with angle markings (from 0° to 359° ). If the weights and pulley positions are chosen correctly , then the center ring will balance over the table without touching anything other than the strings.

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Here is a close-up image of the balanced ring. There are four tension forces in equilibrium . The ring is centered nicely and all strings point to the center pin.
A top view of the table shows the pulleys are currently at 81°, 200°, 290°, and 337°. By convention, we think of as the + x axis , and 90° as the + y axis . This ring is balanced: notice that it is centered, and that each string points directly towards the center of the ring.

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The strings are connected to a hangar that makes it easy to add or subtract weight. As you do your calculations, don’t forget to include the mass of the hangars! To move a pulley to a new angle, first loosen the thumbscrew as indicated here.
The Vector Lab Begins The first experiment (with force vectors ) is to form equal and opposite vectors on the Force Table.

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