then work done in stretching the spring through 40 mm is :

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A spring 40 mm long spring is stretched by applying a force. If 10 N force is required to stretch the spring through one mm, then work done in stretching the spring through 40 mm is :
17
Oct
A spring 40 mm long spring is stretched by applying a force. If 10 N force is required to stretch the spring through one mm, then work done in stretching the spring through 40 mm is : A spring 40 mm long spring is stretched by applying a force. If 10 N force is required [...]
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