A sphere of radius \( 25 \mathrm{~cm} \) and mass \( 1 \mathrm{~kg}...

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A sphere of radius \( 25 \mathrm{~cm} \) and mass \( 1 \mathrm{~kg} \) is hung by a
P string of negligible mass and length \( 40 \mathrm{~cm} \), then

W tension in the string is:
(1) \( 12.81 \mathrm{~N} \)
(2) \( 18.4 \mathrm{~N} \)
(3) \( 10 \mathrm{~N} \)
(4) \( 8 \mathrm{~N} \)
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