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theanimplay
@theanimplay
July 2022
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При длине пружины 20 см, сила упругости равна 30 Н, а при длине пружины 24 см, сила упругости равна 60 Н. Чему равна длина пружины в недеформированном состоянии?
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DeniReyton
Verified answer
30=K(0.2-x)
60=K(0.24-x)
1. K=30/(0.2-x)
2. 60=30/(0.2-x)*(0.2-x)
60=7.2-30x/(0.2-x)
12-60x=7.2-30x
12-7.2=30x
x=0.16 м
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Answers & Comments
Verified answer
30=K(0.2-x)60=K(0.24-x)
1. K=30/(0.2-x)
2. 60=30/(0.2-x)*(0.2-x)
60=7.2-30x/(0.2-x)
12-60x=7.2-30x
12-7.2=30x
x=0.16 м