Each group needs:

• large table clamp ($79)
• 120 cm rod ($29)
• hooked mass set ($43)
• equal length spring set ($35)
• pendulum clamp ($20)

These materials are available on PASCO's website under the high school physics section within the simple harmonic motion set-up. See http://www.pasco.com/physhigh/

Note: If not enough sets of equipment are available for groups of two or three students each, divide the class into a number of groups that matches the number of equipment sets available. If only one set of equipment is available, have students take turns taking measurements and then have everyone compile and calculate the k-values using the same data.

To share with the entire class:

• rulers, for measuring length of springs