Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538
Demonstrations are cataloged according to PIRA Bibliography
PLEASE REQUEST DEMOS WELL IN ADVANCE
Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.
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Purpose:To demonstrate Hooke's Law of proportionality between a force applied to a spring and its stretched length.
Procedure:Hang different masses on the spring and measure the length of the spring on the ruler. Demonstrate that z.B. twice the weight results in twice the stretch.
Also a version with two springs available so that one can demonstrate that two springs in series stretch twice as much and two strings in parallel half as much as a single spring for the same weight.
Hints:This demo has recently been updated. Various springs can be used. Magnetic arrows are supplied to mark locations of the mass as more or less is added. For the positions shown in the photo, we successively add 50g masses.
Simulations are freely available via the PhET Interactive Simulations website. Try their Mass Spring Lab.