A molecule of DNA (deoxyribonucleic acid) is 2.17 m long. The ends of the molecule become singly

Question:

A molecule of DNA (deoxyribonucleic acid) is 2.17 μm long. The ends of the molecule become singly ionized— negative on one end, positive on the other. The helical molecule acts like a spring and compresses 1.00% upon becoming charged. Determine the effective spring constant of the molecule.