PASCO ME-9866 Demonstration Spring Set - Manual (Page 6)

Demonstration Spring Set Model No. ME-9866
6 ®
2. Hang the spring from horizontal support above a tabletop.
3. Tie a 30 cm piece of string to a 200 g mass.
4. Feed the string through the center of the spring and tie to the
horizontal support such that the hook of the mass is around the
bottom loop of the spring, but not stretching it.
5. Ask students to use conservation of energy to calculate how far the
mass will fall when the string is cut.
6. The horizontal support should then be adjusted so the mass will
just miss the tabletop when the string is cut.
7. Cut the string to test the students' hypothesis.