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Read the following statements:
$S_{1}$ : An object shall weigh more at pole than at equator when weighed by using a physical balance.
$S_{2}$ : It shall weigh the same at pole and equator when weighed by using a physical balance.
$S_{3}$ : It shall weigh the same at pole and equator when weighed by using a spring balance.
$S_{4}$ : It shall weigh more at the pole than at equator when weighed using a spring balance.
Which of the above statements is/are correct?

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$S_{1}$ and $S_{2}$

$S_{1}$ and $S_{4}$

$S_{2}$ and $S_{3}$

$S_{2}$ and $S_{4}$

answer is D.

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Detailed Solution

$S_{2}$ is correct because whatever be the $g$ , the same force is acting on both the pans. Using a spring balance, the value of $g$ is greater at the pole. Therefore $m g$ at the pole is greater. $S_{4}$ is correct. $S_{2}$ and $S_{4}$ are correct.

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