If 10 J of Work Are Needed to Stretch a Spring

question 63

Multiple Choice

If 10 J of work are needed to stretch a spring from 10 cm to 12 cm and another 20 J are needed to stretch it from 12 cm to 14 cm, what is the natural length of the spring? Round the answer to nearest integer.

• A) \(10 \text { cm }\)
• B) \(11 \text { cm }\)
• C) \(6 \mathrm{~cm}\)
• D) \(8 \mathrm{~cm}\)
• E) \(9 \mathrm{~cm}\)

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