The elonogation E of a spring balance varies directly with the applied weight W. shows that the value of E when W=13 will be 1.44.
How to calculate the value?
From the information given, the elonogation E of a spring balance varies directly with the applied weight W.
If E=2 when W=18, we are tolf to Find E when W=13. This goes thus:
E = 13 × 2/18
E = 26/18
E = 1.44
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