Questions
A disc of radius R and mass M is pivoted at the rim and is set for small oscillations. If simple pendulum has to have the same period as that of the disc, the length of the simple pendulum should be
detailed solution
Correct option is D
Time period of a physical pendulumT = 2πI0mgd =2π(12mR2+mR2)mgR = 2π3R2g----------------(i)Tsimple pendulum = 2πlg------------------(ii)Equating (i) and (ii), l = 32R.Talk to our academic expert!
Similar Questions
A uniform stick of mass M and length L is pivoted at its centre. Its ends are tied to two springs each of force constant K. In the position shown in figure, the strings are in their natural length. When the string is displaced through a small angle and released. The stick:
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