Physics, 25.02.2021 23:30, ChiefRedCloud

An elastic cord is 61cm long when a weight of 75N hangs from it but is 85cm long when a weight o f 210N hangs from it. What is the spring constant k of this elastic cord

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An elastic cord is 61cm long when a weight of 75N hangs from it but is 85cm long when a weight o f 2...