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Periodic Motion Multiple Questions and Answers.
| 11. | A spring 40mm long is stretched by the acceleration of a force. If 10N force is required to stretch the spring through 1mm, then work done in stretching through 40mm is? | ||
| A. | 84J | ||
| B. | 48J | ||
| C. | 24J | ||
| D. | 8J | ||
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