course Phy 121
Any suggestions or help is always appreciated...Thank you.
#12- What will be needed: Steel spring, rubber band, weights, meter stick.
Your work has been received. Please scroll through the document to see any inserted notes (inserted at the appropriate place in the document, in boldface) and a note at the end. The note at the end of the file will confirm that the file has been reviewed; be sure to read that note. If there is no note at the end, notify the instructor through the Submit Work form, and include the date of the posting to your access page.
How experiment will be conducted and data to be obtained: The rubber band and the steel spring will be hung close to each other, and in front of a meter stick, measurement will be taken. Weight will then be hung from each chain, length will again be measured. Acceleration, velocity, etc... will be determined from the data collected and then used to compare the similarities between the two devices motion of mass.
#15- What will be needed: Block, smooth surface, object with ball-bearing on the bottom, meter stick.
How/what: The two blocks will be pulled across the smooth surface along a measured section of the table. Time, distance traveled, friction, and acceleration will then be determined.
See what you can get for a rotational system using the foam wheel and the TIMER program. You want a series of angular position vs. clock time measurements (e.g., # of revolutions vs. clock time as indicated by the TIMER), which you can then put into a table and determine for each interval the average velocity vs. midpoint clock time.
#16- What will be needed: Rubber band chain, meter stick, thermometer, paper-clips.
How/what: Two rubber band chaons will be made, one will hang outside and the other inside where the temperature remains warmer and more constant. Temperature in both areas will be measured as well as the lengths of each chain. weight will eventually be added to the ends of the chains and measurements will again be taken. The data will help determine how temperature effects the stretching ability of the rubber bands. Data will be analyzed using the equations of motion.
You can probably do this using the plastic tubes, which I'll try to have ready for use tomorrow.
The idea is to observe how the temperature in the tube changes with clock time, then observe how under the same conditions the length of a 'loaded' rubber band chain changes with clock time.
If the temperature in the tube changes more slowly than that of the thermometer, this will work. If however the response time is shorter, or about equal to that of the thermometer, this won't work and we'll have to consider other ways to measure the temperature.