Physics

Problem

In a laboratory experiment, a student attaches a

0.200\,\text{kg}

mass to a spring and measures the period of small oscillations to be

0.90\,\text{s}

. The student then replaces the mass with an unknown mass and finds the period to be

1.20\,\text{s}

. Assuming the spring is ideal and its constant does not change, what is the value of the unknown mass? a)

0.27\,\text{kg}

0.35\,\text{kg}

0.54\,\text{kg}

0.12\,\text{kg}