3A20.15 - Mass on a Spring - 1 to 4 Masses
Place one mass on the spring and on that mass position a post-it note for a flag for the photogate. Center the photogate into the center of the flag. The interface needs to be set to pendulum mode for the photogate which will give time for one complete cycle. Place four masses on the spring and reset the photogate so it is once more in the middle of the photogate. The one to four mass ratio should give a doubling of the period.
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