How to Optimize Mass and Attachment in a Spring Pendulum Experiment?

[chocodrink]

Homework Statement

Hey guys I need help with a spring pendulum experiment.
The practical part of the project is designing it, and gathering at least one set of measured data - independent/dependent variables.
The system will exhibit both motions of a simple pendulum AND a simple spring system.
I don't know which type of mass(should be small in volume) to use. How can it be small and still be able to change as the independent variable? Also, not sure how to attach it to the spring.
Lastly, I'm recording the motion with a video camera.

At this point, I'm thinking of measuring period, while changing the mass but are there any simpler alternatives?

Homework Equations

circular frequencies:
w(spr) = sqr(k/m)
w(pendulum) = sqr(g/l)

if k/m = g/l (approximately equal)
then the system will alternate/involve both motions.
if one is much greater than the other, then the system will exhibit mainly one of spring SHM or simple pendulum SHM.

any help much appreciated! :D

 

[Valkarie]

The Attempt at a SolutionFor this experiment, you could use a small weight or mass that can easily be adjusted. You could use something like a fishing weight or a metal washer. To attach the weight to the spring, you could use a piece of string or wire that is attached to the weight and then attached to the spring. To measure the period of the system, you could use a stopwatch or a timer to record the time it takes for the system to complete one cycle. You could also use the video camera to measure the period by counting the number of frames it takes for the system to complete one cycle.As far as the independent variable goes, you could adjust the mass of the weight or the stiffness of the spring (by adjusting the tension). By adjusting either of these, you can see how it affects the period of the system.