Spring is 3cm long. A student hangs a weight of 2n on it. It is now 4.5cm what is the extension and what is the extension would be with weight 4n
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What is the spring constant of a spring that needs a force of 3 N to be compressed from 40 cm to 35 cm? The spring changes from a length of 40 cm to 35 cm, hence it stretches by 40 cm - 35 cm = 5 cm or | Δx | = 5cm = 0.05 m.
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