Hooke's Law Lab

This is a video that can be used as a lab for an introductory physics class that studies Hooke's Law, F = k x.
Mass is added to a spring in increments of 50.0 g. A pointer on the mass hanger points to a ruler so that the position of each step can be recorded.
Students can use the initial position and positions each mass group to determine the stretch of the spring.
Students should calculate the force caused by each mass group ( F = m g) and the net displacement (y_final - y_initial) of each.
Plotting these as stretch vs. force, students can determine the spring constant of the spring.