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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Units and Measurement
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The effective length of a simple pendulum is the sum of the following three length of string , radius of bob, length of hook. In a simple pendulum experiment , the length of the string, as measured by a metre scale is $92.0\;cm$ . The radius of the bob combined with the length of the hook, as measured by a vernier callipers is $2.15\;cm$ The effective length of the pendulum is

$\begin{array}{1 1} 92.0\;cm \\ 94.2\;cm \\ 94.15\;cm \\94\;cm \end{array} $

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Answer : $94.2\;cm $
$(92.0+2.15)\;cm= 94.15\;cm$
Rounding off to first decimal place, we get $94.2 \;cm$
answered Aug 12, 2014 by meena.p
edited Aug 12, 2014 by meena.p

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