The spring of a spring balance

Reference no: EM131105856

The spring of a spring balance is 8.0 in. long when there is no weight on the balance, and it is 9.5 in. long with 6.0 lb hung from the balance. How much work is done in stretching it from 8.0 in. to a length of 10.0 in?

Reference no: EM131105856

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