An Astronaut Measures Her Mass by Means of a Device

Multiple Choice

An astronaut measures her mass by means of a device consisting of a chair attached to a large spring.The period of oscillation she undergoes when set into motion is used to determine her mass.If her mass together with the chair is 172 kg,and the spring constant is 1250 N/m,what is the time required for her to undergo 10 full oscillations?

A) 3.7 s
B) 8.6 s
C) 170 s
D) 23 s