PHY 121
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A rubber band has no tension until it reaches a length of 7.5 cm. Beyond that length its tension increases by .7 Newtons for every additional centimeter of length.
• What will be its tension if its endpoints are at the points (5 cm, 9 cm) and (10 cm, 17 cm) as measured on an x-y coordinate system?
9cm-5cm=4cm
17cm-10cm=7cm
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• What is the vector from the first point to the second?
7cm-4cm=3cm
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• What is the magnitude of this vector?
7.5cm * 3cm= 22.5cm
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• What vector do you get when you divide this vector by its magnitude? (Specify the x and y components of the resulting vector).
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• What vector do you get when you multiply this new vector by the tension?
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• What are the x and y coordinates of the new vector?
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15 min
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&#Please compare your solutions with the expanded discussion at the link
Solution
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