2. An experiment is performed to measure the spring force constant (k) of an unknown spring. When a 100g +/- 1g mass (m) is hung from the spring stretches a length (x) 5cm+/-0.2cm. Based on these measurements, what is the uncertainty in the k? Suppose the experiment had been done with a 300g +/-1g mass. How would this affect (if at all) the uncertainty in k due to the stretch? How would this affect (if at all) the uncertainty in k due to m? a) b)
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