A \( 2 \mathrm{~kg} \) mass lying on a table is displaced in the P ...

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A \( 2 \mathrm{~kg} \) mass lying on a table is displaced in the
P horizontal direction through \( 50 \mathrm{~cm} \). The work done by the normal reaction will be -
W
(1) 0
(2) 100 joule
(3) 100 erg
(4) 10 joule
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