The time period of oscillations of a simple p | vedclass

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Question

(d)

Let initial length be $I_1$

Final length $I_2=I_1 	imes \frac{144}{100}$

$T_1=2 \pi \sqrt{\frac{l_1}{g}}$

$T_2=2 \pi \sqrt{\frac{I_1}

Vedclass · Accepted Answer

$72$

Vedclass · Answer

(d)

Let initial length be $I_1$

Final length $I_2=I_1 	imes \frac{144}{100}$

$T_1=2 \pi \sqrt{\frac{l_1}{g}}$

$T_2=2 \pi \sqrt{\frac{I_1}{g} 	imes \frac{144}{100}}$

or $T_2=1.2 T_1$

$T_1=60\,s$

So $T_2=72 \,s$

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