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# Physics Honors – Lab 04 – Addition of Vectors

Purpose

• The intent of this activity is to practice adding and manipulating vectors using both graphic and mathematical means.
Procedure
• Students are given graph paper, rulers and protractors for the assignment.
• Students are provided with a list of scenarios to attack. For each scenario, students must add the vectors graphically, finding the resultant.
• NOTE: the graphic method includes using the parallelogram method.
• Students are then asked to solve the same vector problem using mathematical methods.
• In both approaches the magnitude and direction of the resultant should be determined.
• Finally, calculate a percent difference separately for the magnitude and direction of each trial
• Percent Difference = [(Graphical Result – Math Result)/(Math Result)] x 100%
Notes
• Each sheet of paper is for one scenario, with the mathematical and graphical solutions being on opposite sides.
• The assignment will be turned in at the end of the class period on Friday
• HOMEWORK – Complete the math for all scenarios before Friday’s class period
• Compilation of results posted [LINK]
Scenarios – Vectors to Be Added
 Trial Vector A Vector B Vector C Vector D 1 15 @ 25° 25 @ 55° 2 87 @ 245° 33 @ 115° 3 935 @ 305° 150 @ 145° 4 26 @ 15° 45 @ 99° 13 @ 215° 5 400 @ 75° 800 @ 25° 500 @ 305° 300 @ 205°