Ten one rupees coins are put on top of each other on a table. Each ...

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Ten one rupees coins are put on top of each other on a table. Each coin has a mass ' \( m \) ' kg., then the force
\( \mathrm{P} \) on the 7th coin (counted from the bottom) due to all

W. the coins on its top:
(1) \( 3 \mathrm{mg} \)
(2) \( 7 \mathrm{mg} \)
(3) \( 2 \mathrm{mg} \)
(4) \( 5 \mathrm{mg} \)
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