What is the frequency of oscillation of a pen | vedclass

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(A) The time period of a simple pendulum is given by $T = 2\pi \sqrt{\frac{l}{g_{eff}}}$.In a freely falling lift,the effective acceleration due to gr

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(A) The time period of a simple pendulum is given by $T = 2\pi \sqrt{\frac{l}{g_{eff}}}$.In a freely falling lift,the effective acceleration due to gravity $g_{eff}$ is $g - a$. Since the lift is in free fall,$a = g$,therefore $g_{eff} = g - g = 0$.Substituting this into the time period formula,we get $T = 2\pi \sqrt{\frac{l}{0}} = \infty$.The frequency of oscillation $f$ is the reciprocal of the time period,$f = \frac{1}{T}$.Therefore,$f = \frac{1}{\infty} = 0 	ext{ Hz}$.

What is the frequency of oscillation of a pendulum suspended in a freely falling lift?

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