PHY 201
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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?
answer/question/discussion: ->->->->->->->->->->->-> :1.35N
• What is the vector from the first point to the second?
answer/question/discussion: ->->->->->->->->->->->-> :1.35
• What is the magnitude of this vector? 1.35N
answer/question/discussion: ->->->->->->->->->->->-> :
• What vector do you get when you divide this vector by its magnitude? (Specify the x and y components of the resulting vector). UNIT VECTOR
answer/question/discussion: ->->->->->->->->->->->-> :
• The new vector should have magnitude 1. When you divide a vector by its magnitude the result is a vector with magnitude 1. We call a vector of magnitude 1 a unit vector. What vector do you get when you multiply this new vector (i.e., the unit vector) by the tension?
answer/question/discussion: ->->->->->->->->->->->-> :
• What are the x and y components of the new vector?
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20 MIN
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&#Please compare your solutions with the expanded discussion at the link
Solution
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