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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photos - Tension in a String
Attach one end of the string to a bar and hang the other end over the pulley on the opposite side. Hang a 1kg mass on the string and ask students what the tension in the string is. Next, measure the tension by inserting a spring scale between the weight and bar as shown below. Now, remove the scale and add a second mass to the opposite end of the string. What is the tension in the string now?