Question Number 135405 by muhammadabdallah last updated on 12/Mar/21
Commented by mr W last updated on 13/Mar/21
$${you}\:{should}\:{tell}\:{what}\:{you}\:{are}\:{talking} \\ $$$${about}. \\ $$$${i}\:{guess}\:{you}\:{are}\:{talking}\:{about}\:{the} \\ $$$${period}\:{of}\:{a}\:{torsion}\:{pendulum}.\:{then} \\ $$$${I}\:{is}\:{not}\:{the}\:{moment}\:{of}\:{inertia}\:{of}\:{the} \\ $$$${wire},\:{which}\:{makes}\:{no}\:{sense}\:{here}, \\ $$$${but}\:{the}\:{moment}\:{of}\:{inertia}\:{of}\:{the} \\ $$$${suspended}\:{body}. \\ $$
Commented by mr W last updated on 13/Mar/21
$${please}\:{check}\:{again}!\:{for}\:{torsion} \\ $$$${pendulum},\:{i}\:{think}\:{it}\:{is} \\ $$$${T}=\mathrm{2}\pi\sqrt{\frac{\mathrm{2}{IL}}{\eta\pi{a}^{\mathrm{4}} }} \\ $$