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Calculate the work done in compressing the spring

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A force of 300 pounds compresses a 10-inch string to a length of 4 inches.

1) Calculate the work done in compressing the spring an additional 2 inches.

2) Calculate the work done in compressing the spring a total of 4 inches (from its natural length).

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The expert calculates the work done in compressing the spring. The work done in compressing the spring is determined.

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