Physics: Spring Constant?

Choose answer:

A. A stopwatch, a single mass, and a meter stick. The student would measure the time it takes the weighted spring to fall one meter. By graphing distance versus time, the student could use the area of the graph to determine the spring constant.

B. A meter stick and a set of common masses. The student would hang the masses from the spring, one at a time, and measure how far the spring stretched from each mass. Then, the student would graph the weight of the masses versus the length that the spring stretched. The slope of this graph would yield the spring constant.

C. A set of common masses and a stopwatch. The student would hang the masses from the spring, one at a time, and let the mass/spring system oscillate. Using the stopwatch, the students would then time how long the oscillations took place from the moment the mass was released until the moment it came to rest. The time in seconds multiplied by the mass for each trial should result in the same number, which is the spring constant. 

D. A set of common masses and a stopwatch. The student would hang the masses from the spring, one at a time, and let the mass/spring system oscillate. Using the stopwatch, the students would then time how long the oscillations took place from the moment the mass was released until the moment it came to rest. The student would then make a graph of mass vs time of oscillations. The slope this graph would be the spring constant.