Questions
A metre stick swinging in vertical plane about a fixed horizontal axis passing through its one end undergoes small oscillation of frequency f0. If the bottom half of the stick were cut off, then its new frequency of small oscillation would become
detailed solution
Correct option is B
f0=12πmgLI=12πmgLmL212=12π12gLwhere / is the distance between point of suspension and centre of mass of the body. Thus, for the stick of length L and mass m,f0′=12πmgL4m2(L/2)212=12π24gL=2f0Talk to our academic expert!
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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
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