সরল দোলন গতি

Two simple pendulum of length 1.44 m1.44\ m and 1 m1\ m start swinging together. After how many vibrates will they again start swinging together

হানি নাটস

n1ln\propto \dfrac{1}{\sqrt{l}}

n2n1=1.441=1.21\Rightarrow \dfrac{n_{2}}{n_{1}}=\sqrt{\dfrac{1.44}{1}}=\dfrac{1.2}{1}

n2=1.2 n1\Rightarrow n_{2}=1.2\ n_{1}

For n2n_2 be integer minimum value of n1n_1 should be 55 and then n2=6n_2=6 i.e., after 66 oscillations of smaller pendulum both will be in phase.

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