14 Pendulum Periods book 1.docx - Experiment 14 Pendulum...

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Experiment14Pendulum PeriodsA swinging pendulum keeps a very regular beat. It is so regular, in fact, that for many years thependulum was the heart of clocks used in astronomical measurements at the GreenwichObservatory.There are at least three things you could change about a pendulum that might affect theperiod(thetime for one complete cycle):the amplitude of the pendulum swingthe length of the pendulum, measured from the center of the pendulum bob to the point ofsupportthe mass of the pendulum bobTo investigate the pendulum, you need to do acontrolledexperiment; that is, you need to makemeasurements, changing only one variable at a time. Conducting controlled experiments is a basicprinciple of scientific investigation.In this experiment, you will use a Photogate capable of microsecond precision to measure the periodof one complete swing of a pendulum. By conducting a series of controlled experiments with thependulum, you can determine how each of these quantities affects the period.Figure 1OBJECTIVESMeasure the period of a pendulum as a function of amplitude.Measure the period of a pendulum as a function of length.Measure the period of a pendulum as a function of bob mass.Physics with Computers14 - 1Pendulum PeriodsLaboratoryKhanal, ChoodaTuesday, November 13 2018Robert VelasquezEmmanuel CastanedaTomas FiureKevin GarciaJann Dominguez
Experiment 14MATERIALScomputerstringVernier computer interface2 ring stands and pendulum clampLoggerPromasses of 100 g, 200 g, 300 gVernier Photogatemeter stickprotractorPRELIMINARY QUESTIONS

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