Pendulum pulse vertical flick period

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James Ray
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Homework Statement



Screenshot of an online physics quiz, Question 11: an object of mass M = 50.6 kg hangs from a ceiling by a string of length L = 32.5 cm and mass m = 11.8 g, with a prompt to find the time for a pulse to make one round trip, and an empty answer box in seconds.


Homework Equations


T= 2pi*sqrt(L/g)

The Attempt at a Solution


T= 2pi*sqrt(0.325/9.8)=1.14 s

That seems like a reasonable answer.

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Incorrect.

What is your justification for using the formula for the period of a simple pendulum? Is the motion of the hanging mass relevant here? What type of physics is being asked about?

In future, please type out your problem statement and solution attempts. Justify your approach and steps.