Answer :

We know Frequency of a simple pendulum is given by the relation

Where ๐ is the frequency of oscillation, g is acceleration due to gravity, l is the length of the pendulum, in case of free fall effective acceleration due to gravity changes and becomes 0

gโ = 0

so putting g = 0 ms^{-2} in the above equation

we get frequency of oscillation

So frequency of oscillation of pendulum in case of free fall is 0 Hz

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