1 make a pendulum by tying a 100 cm string to a mass

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1.Make a pendulum by tying a 100-cm string to a mass. Hold the string in your hand and let themass swing. Observing only with your eyes, does the period depend on the length of thestring? Does the period depend on the amplitude of the swing?2.Try a different mass on your string. Does the period seem to depend on the mass?PROCEDURE1.Use the ring stand to hang the 200-g mass from two strings. Attach the strings to a horizontalrod about 10 cm apart, as shown in Figure 1. This arrangement will let the mass swing onlyalong a line, and will prevent the mass from striking the Photogate. The length of thependulum is the distance from the point on the rod halfway between the strings to the centerof the mass. The pendulum length should be at least 100 cm.2.Attach the Photogate to the second ring stand. Position it so that the mass blocks thePhotogate while hanging straight down.3.Connect the Photogate to theDIG/SONICinput on the CBL 2 or theDIG/SONIC 1input of theLabPro. Use the black link cable to connect the interface to the TI Graphing Calculator.Firmly press in the cable ends.4.Turn on the calculator and start theDATAGATEprogram. PressCLEARto reset the program.5.Set up the calculator for pendulum timing.a. SelectSETUPfrom the main screen.b. SelectPENDULUMfrom thePHOTOGATE SETUPscreen.6.Temporarily hold the mass out of the center of the Photogate. Observe the reading on thecalculator screen; you should see --0--, which indicates that the gate is open. Block thePhotogate with your hand; note that the Photogate is shown as blocked (--X--). Removeyour hand and the display should change to unblocked.7.Temporarily hold the mass out of the center of the Photogate. SelectSTARTto prepare thePhotogate.8.Now you can perform a trial measurement of the period of your pendulum. Hold the massfrom about 10º from vertical and release. (For a pendulum that is 100 cm long, thatcorresponds to pulling the bob only about 15 cm to the side.) After the calculator indicatesthat five trials have been recorded, pressSTOto end data collection. The average period isdisplayed on the calculator screen.

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Chapter 14 / Exercise 3
Collision Repair and Refinishing: A Foundation Course for Technicians
Jund/Thomas
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Term
Fall
Professor
Prof.K.Nguyen
Tags
Period, Photogate
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Collision Repair and Refinishing: A Foundation Course for Technicians
The document you are viewing contains questions related to this textbook.
Chapter 14 / Exercise 3
Collision Repair and Refinishing: A Foundation Course for Technicians
Jund/Thomas
Expert Verified

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