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OpenStudy (anonymous):
Hooke's Law. The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 17 cm when the weight is 3 kg, what is the distance when the weight is 9 kg?
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OpenStudy (anonymous):
varies directly -> y/x = constant hence, distance/weight = constant 17/3 = d/9 d = 17 x 3 = 51
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