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An astronaut on the Moon attaches a small brass ball to a 1.00- m length of string and makes a simple pendulum. She times 15 complete swings in a time of 75.0 seconds. From this measurement she calculates the acceleration due to gravity on the Moon. What is her result?

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2 answers
  1. T =2•π•sqrt(L/g),
    T =t/Ná
    g = 4• π^2•L•N^2/t^2 =
    =4• π^2•1•15^2/75^2 =
    =1.58 m/s^2

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  2. 1345 m/s^2

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