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Physics, 12.11.2020 21:30 yolo123321

1. A mass of 50g is applied to a spring which stretches by 17mm. What is the spring constant? 2. How much energy does the spring in Q1 above store?
3. A catapult with a spring constant of 500N/m is stretched 30cm. How fast can it shoot an arrow with a mass of 50g?

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