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A load of mass 0.5kg is hung at the end of a spring. Given that the extension of the spring is 30cm. Find the work done by the weight to stretch the spring.
Figure above shows 2 identical springs, one without load and one with a load of mass, m. Find the potential energy stored in the spring in the spring with load if the spring constant is 500Nm-1.
The photo shows a image of a copper spring. A student found that he need to do 15J of work to stretch the spring to an extension of 5cm. What is the spring constant of the spring?